Hi Vladislav,

i think this is independently

from thread or thread leading messages

i have the same bug when threading is disabled

and the bug is only in the with threads 

patched RC not in the standard RC. And when 

because of this then the bug would not be sporadic.

one two times is all ok and then sporadic comes 

the bug and messages shows twice.

I have spend mass time on this and I do not find 

the reason or solution.   

best Eric