Some plugins installed/updated from FAB in the epic launcher are duplicated

Summary

I bought multiple plugins on the unreal marketplace (now FAB). I observed that when the epic launcher indicate an update the plugins may be duplicated in two different subfolders of the “Engine/Plugins/Marketplace” folder. It appened for both unreal 5.4 and 5.5 versions. I think this may come from the names of the subfolders that contains the plugin. Previously, the names were chosen according to the plugins names but now, there just one or two word followed by a chain of number of character (for exemple ProtoAnimatedText have become ProtoAni0dabac7ab294V11). The last part of the new name were differents.

What type of bug are you experiencing?

Other

Steps to Reproduce

Install a plugin to a version of the unreal marketplace and install available update.

Expected Result

Previous version of the unreal plugin should be completely removed and replaced by the new version.

Observed Result

Sometime, the previous version of a plugin is not removed and a new folder with a different folder containing the same plugin is added. It cause problem when compiling C++ code.

Platform

Epic launcher, unreal 5.4, and unreal 5.5

Operating System

windows 11

Additional Notes

I think that this is caused by the fact that you modified the way the plugin folder are named. The new names may be modified on your end and it somehow cause this bug.