Piano window highlight misalignment

This is a screenshot:

No matter what value the gui scaling is, there will always be this issue.

After I returned version 7.4, there was no such issue.

I have this problem too. Windows 11 and ubuntu based linux. Ardour 7.5

It was fixed a month or more ago in the codebase, so the current nightly builds are fine. 7.6 will be out fairly soon, and will obviosuly be fixed too.