Backend menu display > Flex basis

[gregory-moka]

Hello, after my chrome update to chrome 75, the menu has a weird display :

I found a topic for this issue :

• https://bugs.chromium.org/p/chromium/issues/detail?id=958802
• https://stackoverflow.com/questions/56525100/chrome-v75-images-with-max-width-stretched-inside-a-flex-column-div

[keshrath]

https://github.com/muk-it/muk_web/commit/fb14a33aa08d00d13e3a13e1f975ed3f9b4c14ef