A customer of mine found a bug related to MyBB and Microsoft Edge browser:

The forum works and looks the best using this browser aside from one issue. When sending a PM message, it seems to submit twice and MyBB gives a warning about sending identical messages too quickly. It happens every time I send a PM.

After some digging, we were able to replicate the issue on Windows 10 using Microsoft Edge browser. Unfortunately, it’s something that affects the default mybb that ships with the most recent release as of this post: 1.8.6. Continue reading →