Custom sidebar plugin went crazy

Hello all,

I have installed and activated the “Custom sidebar” plugin on my Workpress network without any problem.

I have also tried using it without any problem.

But the plugin went crazy for a few days now : I have selected multiple sidebars in the custom sidebars config section and instead of appearing through a drop-down list in the Sidebars section of a page or of an article, they appear one by one (one by line) before a drop-down list containing all the sidebars…

I have tried to reset the custom sidebards settings, uninstall the plugin but it didn’t fix the issue…

Any help appreciated thanks