First of all: thank you for the new feature "watch changes in category membership"!!
One thing I noticed: the link to the page history isn't working (see attached screenshot, lowest line "05:37"). Clicking on "hist" opens the file description page, not its history.
And if there are more than one actions for a category (see screenshot "08:54") there is a link to the category's history (not too useful IMHO) but none to the files' histories and diffs.