Weapon single/group fire bug?

[Captainspire]

It just started a week or so ago but when I selected my weapons to single fire mode, after that selected weapon fires, two things happen:

1. The remaining simular weapons regroup and fire all in one mass
2. When firing that one selected weapon,(single click) the next batch automatically fire right after.

I thought # 2 was a mouse issue, but it's happening on my PC the same as my Laptop., switched out mouses and same issue.

Any thoughts?