Duplicate groups created when browsing backward/forward

[mxygem]

I created a group today and noticed that when using the backward/forward browsing buttons on my mouse that duplicates of the group are created.

Reproduction steps:

• Make a new group
• Use the browse back button (I use one on my mouse)
• Browse forward
• New, duplicate group!

I forked the repo and tried getting it running locally(including fiddling with the compose file) to see if I could tweak things but wasn't able to otherwise this may have been a PR instead. 😅