[Lazarus] Changes do not appear on F9

[Vojtěch Čihák]

Hi,
 
I have some little issue with my projects. When I do some changes in related units (those that are in "uses" sectin of the main form) and I hit F9 (Run), those changes do no appear in executed program.
I have to - for example - move some button a few pixels and run (F9) again, now the changes are there.
 
I observe this behaviour ~ 2 months.
 
Was there recently some changes or new optimalizations in Lazarus or do I have some wrong settings? I only found Project Options -> Miscellaneous [checkbox] Always Build (even if nothing changes) but I guess it's not it.
Of course, I speak about trunk.
 
Thanks,
 
Vojtěch.