When we click any tab in onlyoffice apps, when the interface theme is set to Light, the tabs are marked, I have named the screenahot “marked tab light”, but when we click any tabs in onlyoffice apps, when we set the interface theme to Dark, the tabs are not marked, I have named the screenahot “marked tab dark”. Make the tabs marked in onlyoffice apps when we click on it, when we set to Dark(Interface theme).
In the dark theme, the tabs also “differ in color”, even in the screenshot you provided.
Perhaps it’s the display of your monitor. Try changing the contrast or using a different preset color mode.
I have changed Lighting to higher percentage on my monitor and tabs are now marked in onlyoffice apps. The reason I’m keeping Lightning low is because to protect my eyes from bright light on screen. If only if it could be made, to mark tabs even setting our screen to low light. Even if this can’t be made, I’ll get used unmarked tabs in low light screen.
We are glad to help.
Perhaps the problem is specifically in the monitor (display matrix)
Please specify the monitor model
I’m using a TV as a monitor.
I believe that @Nikolas is right and the situation is related to specific monitor\monitor settings. There’s the difference between marked\unmarked tabs in Dark mode even on your screenshot.