fix: Scrolling along edges breaks text editing#135
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Existing Gutenberg `preventFocusCapture` logic relies upon `pointerdown` and `pointerup` events for temporarily disabling all text blocks `contenteditable` status. This is down to mitigate issues with block selection for `flex` elements. However, `pointerup` events are not always triggered on touch devices when a touch turns into a swipe. When you scroll with your finger outside of the block canvas, the `pointerup` callback is never invoked. Scrolling twice or more leads to a stale `value` in the callback, and a state where `contenteditable` is perpetually disabled.
nbradbury
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May 19, 2025
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nbradbury
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Fix is good! I was able to reproduce the problem in trunk but not with this branch 
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What?
Fix perpetually disabled text blocks after scrolling the editor by swiping
outside of the block canvas container.
Why?
Fix CMM-356. The inability to edit text is unexpected.
How?
Existing Gutenberg
preventFocusCapturelogic relies uponpointerdownand
pointerupevents for temporarily disabling all text blockscontenteditablestatus. This is done to mitigate issues with blockselection for
flexelements.However,
pointerupevents are not always triggered on touch deviceswhen a touch turns into a swipe. When you scroll with your finger
outside of the block canvas, the
pointerupcallback is never invoked.Scrolling twice or more leads to a stale
valuein the callback, and astate where
contenteditableis perpetually disabled.Testing Instructions
block canvas that contains the blocks.
Accessibility Testing Instructions
N/A, no navigation changes.
Screenshots or screencast
N/A, no visual changes.