The ability to delete changes to tasks has vanished (no more "X")

In a task, we routinely make date changes or slightly rename tasks. These changes by person are then recorded in the task. The person has the option to delete the changes’ notes with a little x to the right.
That “x” is now gone as of today. Now our tasks have all the long lists of changes because we cant delete the ‘commentary.’
Why is this happening and surely it is returning?
I cant seem to attach a snip

A post was merged into an existing topic: Restore ability to delete items in activity log