Sourced from react-resizable-panels's releases.

4.5.6

• 644: Disabled the change to collapsible panel behavior that was originally made in 635.

4.5.5

• 641: Removed aria-orientation role from root Group element as this was invalid according to the ARIA spec; (for more information see the discussion on issue #640)
• 642: Bugfix: Fix collapsible Panel regression introduced in 4.5.3

4.5.4

• 638: Panel avoids unnecessary re-renders in response to mouse-hover state.

4.5.3

• 635: Expand pre-collapsed panels if drug past the halfway point for more consistent collapse/expand behavior.
• 631: Bugfix: Panels set max-width and max-height to 100% to fix potential CSS overflow bug.

4.5.2

• 626: Decrease default hit target size for Separator and Panel edges; make configurable via a new Group prop.

4.5.1

• 624: Bugfix: Fallback to alternate CSS cursor styles for Safari

Safari	Chrome, Firefox
grab	move
col-resize	ew-resize
row-resize	ns-resize

4.5.0

• 616: Replace Separator and Panel edge hit-area padding with a minimum size threshold based on Apple's user interface guidelines. Separators that are large enough will no longer be padded; separators that are too small (or panels without separators) will more or less function like before. This should not have much of a user-facing impact other than an increase in the click target area. (Previously I was not padding enough, as per Apple's guidelines.)
• 615, 620: Double-clicking on a Separator resets its associated Panel to its default-size (see video below); double-click will have no impact on panels without default sizes
• 622: Bugfix: Panels within vertical groups are now properly sized in Safari
• 618: Bugfix: Don't override adoptedStyleSheets

Demo of double-clicking on a separator:

dbl-click.mov

4.4.2

• 610: Fix calculated cursor style when "pointermove" event is has low-precision/rounded clientX and clientY values

4.4.1

• 600: Bugfix: Collapsible Panel should treat defaultSize={0} as collapsed on mount

4.4.0

• 599: Add new onLayoutChanged prop to Group.

For layout changes caused by pointer events, this method is not called until the pointer has been released. This callback should be used if you're doing something like saving a layout as it is called less frequently than the previous approach.

The useDefaultLayout hook has also been updated to use this callback (though it will continue to support the old callback as well, with a @deprecation tag).

4.3.3

... (truncated)

Sourced from react-resizable-panels's changelog.

4.5.8

• 651: Disabled the change to collapsible panel behavior that was originally made in 635 due to another reported regression

4.5.7

• 646: Re-enable the collapsible Panel from 4.5.3 that was disabled in 4.5.6
• 648: Bugfix: Reset Separator hover-state on Document "pointerout"

4.5.6

• 644: Disabled the change to collapsible panel behavior that was originally made in 635

4.5.5

• 641: Removed aria-orientation role from root Group element as this was invalid according to the ARIA spec; (for more information see the discussion on issue #640)
• 642: Bugfix: Fix collapsible Panel regression introduced in 4.5.3

4.5.4

• 638: Panel avoids unnecessary re-renders in response to mouse-hover state.

4.5.3

• 635: Expand pre-collapsed panels if drug past the halfway point for more consistent collapse/expand behavior.
• 631: Bugfix: Panels set max-width and max-height to 100% to fix potential CSS overflow bug.

4.5.2

• 626: Decrease default hit target size for Separator and Panel edges; make configurable via a new Group prop.

4.5.1

• 624: Bugfix: Fallback to alternate CSS cursor styles for Safari

Safari	Chrome, Firefox
grab	move
col-resize	ew-resize
row-resize	ns-resize

4.5.0

• 616: Replace Separator and Panel edge hit-area padding with a minimum size threshold based on Apple's user interface guidelines. Separators that are large enough will no longer be padded; separators that are too small (or panels without separators) will more or less function like before. This should not have much of a user-facing impact other than an increase in the click target area. (Previously I was not padding enough, as per Apple's guidelines.)
• 615, 620: Double-clicking on a Separator resets its associated Panel to its default-size (see video below); double-click will have no impact on panels without default sizes
• 622: Bugfix: Panels within vertical groups are now properly sized in Safari
• 618: Bugfix: Don't override adoptedStyleSheets

Demo of double-clicking on a separator:

... (truncated)

• 119437b 4.5.7 -> 4.5.8
• 566de30 Revert collapse behavioral change again (#651)
• 87e361a Simplify e2e test main window vs popup window logic
• db20c9b 4.5.6 -> 4.5.7
• 5948c2b Update CHANGELOG with pending release changes
• 7f58523 Reset seperator hover-state on Document "pointerout" (#648)
• 21f3e9d Update CHANGELOG with pending release notes
• 7382e94 Re-enable the collapsible Panel from 4.5.3 that was disabled in 4.5.6 (#646)
• 1cb436e Unwind some of the test abstraction
• 46889ae 4.5.5 -> 4.5.6
• Additional commits viewable in compare view

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