Steps to replicate the issue (include links if applicable):

• Go to https://kk.wikipedia.org/wiki/Арнайы:Бапталымдар#mw-prefsection-gadgets
• Search "CategoryMaster" and enable it
• Go to any category page (for example, https://kk.wikipedia.org/wiki/Санат:2026_жыл) and wait for the page to load completely
• Click on the "More" arrow ("Тағы" in Kazakh) to the left of the search bar
• Click on the "Move" button ("Жылжыту" in Kazakh)

These steps apply to the Vector 2010 interface, but the error/glitch is relevant to any version of the interface.

What happens?:

Happens NOTHING. The "Move" (Жылжыту) button does not respond to being pressed, unlike the other page action buttons.

What should have happened instead?:

Instead of the standard renaming page, a pop-up window should appear where a new category name can be entered; below it, all pages currently using the old category name should be displayed. The user could enter a new category name and click the "Save" button, whereupon all pages would automatically switch their category to the new name.

Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):

Other information (browser name/version, screenshots, etc.):

As far as I know, we are the only ones who have this gadget; it isn't available in the default settings on other wikis. In terms of functionality, this gadget is a copy of Cat-a-lot, which helped automatically change a category name to a new one across all included pages without manual editing. Now, not only does it not work, but it doesn't even allow you to change at least only the name while the gadget is turned on.

When the gadget is on, the "Move" button does not respond at all and does not open the renaming page (https://kk.wikipedia.org/wiki/Арнайы:Бетті_жылжыту/Санат:2026_жыл).