Indeed. Encountered the same bug. This is going to be heavily abused, please prioritize.

Works for me without the speedloader. i managed to crash 5 different servers repeatedly.

I've managed to pinpoint the issue. It happens after i shoot my shotgun and reload using the R button. I noticed it only happens when i have my other sawed off shotgun loaded and stored in my backpack.

If i drop the sawed off shotgun and fire my normal shotgun i dont get a reload option with R.