[Lazarus] New AutoSize issue

[faber]

> Yes, OldAutoSize was removed a week ago in revision 25190.
> Please update and test with current version.
>
> About multithreading: All LCL operations should be done in the main
> thread.
> Does hiding the other stringgrids work?
> Have you checked what size the new stringgrid gets? Check the OnResize
> event of the stringgrids.

Other grids works ok, hm...
the difference between them is that good grids changes control on the
main form (where panel with grids) but the problematic grid is showing
automatically after closing the second form.
I have an idea,I'll test it again and try to do a small test project.