Only bug I’ve found so far that irks me is when using the EQ in the Effects tab, activating the Low Pass doesn’t create a visual representation of the low pass, but it does for the high pass and notch. It works, you just can’t see it. 
Same for the EQ in the reverb 
I also have that Problem too, my Lowpass band isn’t showing Visual on EQ and Reverb
heres my Specs if its needed: (Yeah, im super Lowend)
FL Studio
Windows 8.1
Intel Celeron N2830 / 2.16 GHz