Gutenberg Performance Lab Merges INP Fixes
Interaction to Next Paint on the editor canvas gets a round of boring, important patches. Writers with large posts will feel it.
by Sam Calder·June 30, 2026·0 Comments
INP is how you describe a canvas that feels sticky. The performance lab’s latest merge is not a headline feature. It is the difference between typing and waiting to type.
If your ‘the editor is slow’ ticket was actually a thousand blocks and a third-party sidebar, this helps the first part. The sidebar is still your problem.
