[SOLVED] Classic UI - alignment problem (vector -> png)

Hi, another strange behavior i have from OH2. Yesterday i did successfully change vector to bmp and the alignment with me oh1 sitemap is great, all looked like before, except the more fancy icons.

Today i restart the machine and again the vector look, like the text alignment is completely messed up, as before i changed from vector…first idea that somehow the config messed up for classic UI did not proof right as it was correctly set to BMP.

So any idea for what reason OH2 does messed up alignment even if vector is set to BMP already…

have to answer myself - Firefox (Clear Cache) and all is fine again. do not understand why this is required, but hope its gone and not required to be done too often. Regards