TRichView.com

Hi.

When migrating to Delphi 10.4.1 I trying comaptibility and I found rendering bug in ScaleRichView demo ActionTestRibbon.

Bug disapear when I set property TRibbon.UseCustomFrame on False. This property has poor description. Do anyne know, what causes the problem?

I report it to Quality central https://quality.embarcadero.com/browse/RSP-31165.

This effect looks like when runtime themes are turned off.
Project options, page Application | Manifest, Enable Runtime Themes must be checked.
Otherwise toolbar images lose semitransparency and look like on your picture.

Project options, page Application | Manifest, Enable Runtime Themes must be checked.

Example in RSP-31165 was enabled runtime themes.