I think this solves the problem with less design blinking (Solution 3 attached).
EDIT:
Taking advantage of the topic, if anyone has a solution to my problem, let me know.
The caption 'Информация' of secondary windows using VCLStyles + Botva2 are not displayed correctly in languages that use Cyrillic characters such as Russian.
P.S: If you use TForm, the VCL design is not applied to the title bar.
This is an old bug that CIU has, and despite many attempts I still haven't been able to solve it.
If anyone has a solution, please share.