Timeline Tabs sticking to Mouse (AE25.5)

Current Behaviour:

Clicking a Tab in the Timeline Window Sticks to the mouse as if Dragging is occurring

Expected Behaviour:

Release tab after click (unless actually dragging)

This bug used to happen, at least ten years ago on lower performing hardware, which I do not have.

I have 4TB of PCIE5 cache available and 256GB of 5600DDR5 RAM and 16GB of VRAM available

The system did not exhibit this behaviour until:

- latest 25.5 update

- Added C4D files to comps (Advanced 3d renderer)

Suspect it is 3D related as I have comps with C4d files in.

(on a side not, position should be automatically locked on cineware files, but I can stick that in another post!)

Asus wrx90 / TRPro7965 / Inno3d 5080 - latest Studio Drivers(58.157)/256 5600 supported RAM (XMP boosted)/ T705 1TB OS / T700 4TB cache / T700 4TB Storage 

You should be able to check previous records for how this error was fixed in the past.

Could also be high display settings as I am at 125% on 27" UHD screen