Handbook page revisions are broken

[johnbillion]

Navigating through revisions of handbook pages using the revisions browser appears to be broken. Moving between revisions fades out the current revision but does nothing else.

Example: ​https://make.wordpress.org/core/wp-admin/revision.php?revision=15448

Not had time to investigate it beyond checking that revisions work fine on regular posts on the same site.

[SergeyBiryukov]

Tested a bit, and revisions on other handbook pages work as expected:
​https://make.wordpress.org/core/wp-admin/revision.php?revision=14715

The "PHP Documentation Standards" page loads any revision older than 7123, but a request for newer revisions just hangs:
​https://make.wordpress.org/core/wp-admin/revision.php?revision=7123 (works)
​https://make.wordpress.org/core/wp-admin/revision.php?revision=7243 (hangs)

[ocean90]

E_ERROR: /wp-includes/wp-diff.php:401 - Maximum execution time of 100 seconds exceeded*​
Maximum execution time of 100 seconds exceeded
File: /home/wporg/public_html/wp-includes/wp-diff.php
Line: 401
Source: GET https://make.wordpress.org/core/wp-admin/revision.php?revision=7243?revision=7243
Referer: https://meta.trac.wordpress.org/ticket/1345

[ocean90]

Core ticket: ​#WP35667

[ocean90]

See core ticket.