I've reported this bug already in 2011 via email, and it was fixed in 7.58.
After updating 8.x to 10.14 the bug is again here.
Autosize of TsCheckbox is not always working.
Conditions to reproduce.
1. Place a TsPageControl with 2 Pages on a Form.
2. On the first and second page place a TsCheckbox
3. In form OnCreate:
checkbox1.Caption := '111111111111111111111';
checkbox2.Caption := '222222222222222222222';
Result:
checkbox1 was resized, but checkbox2 was not, because it was not on the active page.