Let's have a try as suggested by Auge. Create/save the first avatar as a JPG and second one as GIF or PNG. Repeat your procedure and change the image.

/Micha

Changing the .jpg avatar for a .png works with no issue but changing again to another .jpg brings problems again, showing 2 times older avatars

Clearing the cache and changing a .jpg avatar for .jpg avatar brings the problems.

Ok if you think it's a cache issue but users shouldn't have to think about clearing the cache just to change their avatar

I think what I will do is go back to the previous version, is it the same process as updating?

thanks again