Hello,

I'v posted this issue in The Github module,
https://github.com/bitcero/rmcommon/issues/73
I can't add any picture in RMcommon images section.

but I just want to know, if someone have the same problem after migration to 2.5.8 of Xoops. you can see this problem in this video:
https://1fichier.com/?jpmnwks1ye

my xoops config:
xoops: 2.5.8
rmcommon: 2.3.2.8
mywords: 2.2.5.5
php: 7.0.7
mysql: 5.6.30
tested with all type of browsers, chrome, firefox, edge, opera, ...

With the best.

I found the solution!
Thanks to Modo for closing this topic.