Ich denk das ist ein Bug in
VCL.Buttons.pas (in D10.4.1/2).
This change in
VCL.Buttons.pas should fix that.
// LStyle.DrawText(
DC, FThemeDetails, Text, TextRect, LFormats, LOptions); //according RSP-30755 (minor subfix) - fix Bitbtn and SpeedButton background color error in win7
LStyle.DrawText(
DC, FThemeDetails, Text, TextRect, LFormats, LColor); //according RSP-30755 (minor subfix) - fix Bitbtn and SpeedButton background color error in win7