TOPIC:

On my 4K display the size of the IDE icons is too small.
Is it possible to increase their size?
Or is there at least such a possibility planned in the future?

Your 4K Monitor Resolution ?

3840x2160

I remind you of my question...

We use many 4k monitors with Res: 3840x2160 and "Scale & layout" 100%
without problem.

CT do NOT support "scale & layout" more than  200% .

Windows text scaling has already brought me a lot of problems with the project: the entire interface is distorted, the image sizes are distorted, in the property inspector I see “width = 300”, but in runtime the check “if width = 300” does not work, because The width is actually different...
But my question was not about this, but about the fact that at 100% text scale on the Windows display, the CT icons are very small. The editor font can be changed, but the icon size cannot.

Your monitor Spec ?

My display PPI = 144