Merge pull request #7377 from dotCooCoo/fix/symbol-expand-reset-bbox

Symbols: Break Link and Expand keep an instance's bounding box

docs/mcp.md

@@ -2991,7 +2991,8 @@ already walks Image Trace. Short agent entry points:
   a symbol with guides keeps its corners at their size, and `symbol.breakLink` gives its art as it draws; dragging a
   guide on the canvas in symbol editing mode sends `nineSliceGuides` in one undo step; `type` is
   Symbol Type, `static` by default for the command and `dynamic` by default in the Symbol Options dialog),
-  `symbol.place {name?, x?, y?}`, `symbol.breakLink {ids?}` (the art keeps the instance's opacity mask; a hidden or locked instance's
+  `symbol.place {name?, x?, y?}`, `symbol.breakLink {ids?}` (the art keeps the instance's opacity mask and its bounding box, square after
+  `object.resetBoundingBox`; a hidden or locked instance's
   art stays hidden or locked and is not selected), `symbol.replace`,
   `symbol.edit {id?, ids?, name?, x?, y?, artboard?, viewCenter?}` (symbol editing mode: the symbol's art on a temporary
   isolated layer, where the instance `id` shows it or centered on (x, y), by default on the center of artboard
@@ -8129,7 +8130,9 @@ square to the page. `object.resetBoundingBox` squares the box again without movi
 object inside the selected ones: the children of groups, compound paths, clip groups, blends, envelopes, repeats and
 intertwines, and the art of linked opacity masks (an unlinked mask's art keeps its angle). Ungroup, Release Clipping
 Mask, Release Compound Path, Blend Expand, Release Envelope, Release Repeat, Release Intertwine and Release Opacity Mask
-then bring back boxes square to the page.
+then bring back boxes square to the page. `symbol.breakLink` and `object.expand` give a symbol instance's art the
+instance's own box: after a reset the art stands square to the page, and an object turned inside the symbol keeps its
+angle relative to the instance's box.
 
 ```json
 {"name":"run_command","arguments":{"command":"object.rotate","params":{"angle":45,"absolute":true}}}

docs/target-app-parity.md

@@ -911,6 +911,7 @@ Moved from the ROADMAP's "Shipped so far" on 2026-10-10. Update it when a featur
   - The Transform panel menu's Transform Object Only, Transform Pattern Only and Transform Both (`transformPanelPatterns`) choose whether the fields, flips and menu flips of the Transform panel and the Properties panel's Transform section move the object and leave its pattern tiles, move the tiles alone, or both (until a choice they follow General › Transform Pattern Tiles, as before); Use Registration Point for Symbol (`useRegistrationPointForSymbol`) measures and transforms one selected symbol instance from its symbol's registration point, where the instance's flips, rotations and shears put it ([Transform panel overview](https://helpx.adobe.com/illustrator/desktop/manage-objects/reshape-transform-objects/transform-panel-overview.html); `panels::transform::tests::the_menu_chooses_whether_the_object_its_pattern_or_both_transform`, `use_registration_point_for_symbol_measures_an_instance_from_its_registration_point`, `use_registration_point_for_symbol_follows_a_transformed_instance`, `tests_prefs::transform_panel_patterns_defaults_to_following_the_general_preference`).
   - The Transform panel's Align to Pixel Grid checkbox (`object.setPixelAligned`) gives paths and compound paths a pixel-aligned property, saved in the native file: their horizontal and vertical straight segments sit on whole points (half points under an odd centered stroke) with whole stroke weights, and every move, scale, rotation, reflection, Transform Each, Align move, Transform panel change, move of direct-selected anchors or of one anchor, move of a compound path's path on its own, artboard move, resize or copy that carries the art, Duplicate or paste that moves a copy, stroke edit and appearance edit that adds, removes, hides, repaints or reweighs a stroke snaps them again, while diagonal segments and curves keep their shape; a compound path made from an aligned path or compound path is aligned and snaps its paths with its own stroke; the box shows a dash for a mixed selection and is unavailable for type, images and groups ([Pixel-aligned property](https://helpx.adobe.com/illustrator/desktop/get-started/learn-the-basics/pixel-preview-mode-for-web-graphics.html); `tests::pixelalign::turning_it_on_snaps_the_path_in_one_undo_step`, `it_stays_aligned_through_transforms`, `it_stays_aligned_when_its_artboard_moves`, `diagonal_segments_and_curves_keep_their_shape`, `type_and_images_cannot_be_aligned`, `the_property_is_saved_and_read_back`, `stroke_edits_keep_it_aligned`, `a_compound_path_of_aligned_paths_is_aligned`, `a_compound_path_of_an_aligned_compound_path_is_aligned`, `a_stroke_without_paint_snaps_to_whole_points`, `moving_direct_selected_anchors_keeps_it_aligned`, `moving_one_anchor_keeps_it_aligned`, `moving_a_path_of_an_aligned_compound_path_keeps_it_aligned`, `artboard_options_and_artboard_copies_keep_it_aligned`, `appearance_edits_keep_it_aligned`, `placed_gradients_follow_the_snapped_path`, `duplicates_and_pastes_keep_it_aligned`, `paths_added_to_or_moved_in_an_aligned_compound_path_keep_it_aligned`, `the_art_of_a_linked_opacity_mask_keeps_it_aligned`, `a_linked_opacity_mask_follows_a_snap`, `aligning_direct_selected_anchors_keeps_it_aligned`, `global_edit_keeps_its_members_aligned`, `a_path_with_live_corners_snaps_its_inner_edges`, `geometry_edits_keep_it_aligned`, `other_path_edits_keep_it_aligned`, `panels::transform::tests::align_to_pixel_grid_shows_and_sets_the_property`).
   - Align New Objects to Pixel Grid (`document.setup {alignNewObjectsToPixelGrid}`, a checkbox in New Document's Advanced Options and a checked item in the Transform panel menu) gives every path and compound path drawn in the document, the paths of a new grid or flare included, the pixel-aligned property, snapped in the step that draws it; it is on in the Mobile and Web presets and off in the others, saved presets and Recent keep it, and the document saves it. Type, images and groups do not take it, and art already in the document, pasted, duplicated or placed keeps its own property (VectorCraft's own rules) ([Pixel-aligned property](https://helpx.adobe.com/illustrator/desktop/get-started/learn-the-basics/pixel-preview-mode-for-web-graphics.html); `tests::pixelalign::align_new_objects_makes_new_paths_pixel_aligned`, `align_new_objects_reaches_grids_flares_and_add_on_shapes`, `align_new_objects_is_saved_and_read_back`, `tests::newdoc::align_new_objects_to_pixel_grid_follows_the_preset`, `panels::transform::tests::align_new_objects_menu_item_toggles_the_active_document`, `dialogs::new_document::tests::align_new_objects_checkbox_follows_the_preset_and_reaches_the_document`).
+  - Break Link to Symbol and Object › Expand give a symbol instance's art the instance's own bounding box: after Reset Bounding Box the art stands square to the page, an object turned inside the symbol keeps its angle relative to the instance's box, a group added for the instance's opacity takes the instance's box, and the clip groups of 9-slice art take the angle of their cell. Compound shapes and Pathfinder receive an instance's art with the same angles (VectorCraft's own behavior; `bboxrotate::reset_bounding_box_then_expand_symbol_instance`, `reset_bounding_box_then_expand_keeps_the_angles_inside_the_symbol`, `expanding_a_faded_symbol_instance_gives_its_group_the_instance_box`, `expanding_a_reflected_symbol_instance_keeps_its_box`, `symbol_nine_slice::break_link_turns_the_cells_of_a_sliced_instance_with_its_box`, effects `outline_object_turns_an_instances_art_with_its_box`).
   - Object › Transform › Reset Bounding Box squares the box of every object inside the selected ones as well: the children of groups, compound paths, clip groups, blends, envelopes, repeats and intertwines, and the art of linked opacity masks. Ungroup and the release commands then bring back boxes square to the page (VectorCraft's own behavior; `bboxrotate::reset_bounding_box_squares_the_objects_inside_a_group`, `reset_bounding_box_squares_the_turned_members_of_a_square_group`, `reset_bounding_box_then_release_clipping_mask` and the other `reset_bounding_box_then_*` tests, `reset_bounding_box_leaves_the_art_of_an_unlinked_opacity_mask`).
   - After a rotation the Free Transform tool shows and drags the same turned bounding box as the Selection tool: its handles, their cursors and its rotate zone sit on the selection's own sides, a handle scales along those sides from the opposite handle ([the help page](https://helpx.adobe.com/illustrator/desktop/manage-objects/reshape-transform-objects/scale-objects.html)), Cmd/Ctrl on a side handle shears along that side, and Perspective Distort and Free Distort start from the turned box's corners (`object.distort` takes `angle` with `from`). The Scale and Reflect tools, their dialogs and commands, and the Transform panel's flips keep the page's axes (VectorCraft's own rule; `bboxrotate::free_transform_handles_turn_with_the_object_and_scale_along_its_axes`, `free_transform_shears_along_the_turned_side`, `free_transform_distort_starts_from_the_turned_box`, `xform::distort_reads_from_in_a_turned_frame_and_rejects_a_bad_angle`, tools `xform::free::tests::the_box_and_its_handles_turn_with_the_selection`).
   - Perspective Distort and Free Distort (`object.distort`) turn each warped object's bounding box as the warp turns the object at its own center, the objects inside groups, compound paths and clip groups and the art of linked opacity masks included, so the next Selection or Free Transform drag uses the tilted box; Object › Transform › Reset Bounding Box squares it again, and corners left where they are add no undo step (VectorCraft's own rule; `bboxrotate::distort_turns_an_upright_box_with_the_warp_at_its_center`, `distort_turns_each_member_and_linked_mask_by_its_own_warp`, `mirrored_and_collapsing_distorts_keep_valid_angles`, `distort_angles_undo_redo_and_reopen_together`, `xform::unchanged_distort_records_no_history`).