I know, it's only recently that the Current Tab of the Categories Panel has been given the ability to display/hide formula categories. And, with that, there is (at least on my setup) the idiosyncrasy that when I hover my mouse pointer over the icon representing the formula category, there is no corresponding tooltip.
Tooltip-Formula.png
However, tooltips are available for both toggle switches corresponding to each - the data driven and the @Keywords categories.
Tooltip-Data-Driven.png
Tooltip-Keywords.png
So, I'm just posting this for awareness, and am/will be grateful for a solution.
P.S.
Not that it really matters, but the formula categories here do have a clickable checkbox, whereas the data driven categories have non-clickable check boxes. Again, maybe makes no difference as clicking a check box for a formula category will just promptly reinstate it.
I see the thumbnail so it appears to have been fixed.
Which IMatch version are you using? 2023.4.6 or older?
I'm using the latest release - Version 2023.4.6.
I can confirm the missing tooltip for the "Formula categories" icon in the Category Panel / Current tab. All other icons have a tooltip. Running IM 2023.4.6.
Just for checking, I turned off "Experimental features" (should not have any impact anyway). Same behaviour, tooltip for the Formula Categories icon is missing.