Some words about GB's main concept. One thing I didn't like about xposed modules was that it was always necessary to reboot a device after making a change to some option. Since GB's main concept was to turn MTK devices running stock ROM into something that's close enough to a feature-packed custom ROM, I had to take a decision - for it to be as much comfortable as possible and to really behave like a custom ROM, I had to design it to support most of the preference changes to be done on the fly without needing to reboot a device. While this sounds nice, it also brings couple of "drawbacks". For changes to be made on the fly, it is necessary to make some preparations when device starts. This means, even if you don't use the particular feature, the necessary preparation/modification is already there and is waiting for the user to come and change that option. 
This means it is not possible to "completely deactivate" particular feature if it causes trouble on your device or if you installed GB because you want to use only one particular feature you can't find elsewhere.
This results in issues on ROMs/devices that have parts that are diverting from default Android implementation too much, or are running heavily modified custom ROMs.
If you experience weird issues after installing GB, even if you didn't activate a particular feature, it is not because of GB is broken, it is because it is not compatible with your ROM. It is very similar as if you installed ROM built from source for Nexus to some Xperia device - it won't work.

Next thing, GB is a complex module and is not suitable for 1 purpose scenario. This means, if you are running custom ROM built from source (CM, PAC, ...), and you are missing a certain feature, your best option is to go ask creators of those ROMs to implement those additional features. Supplementing missing features on well-known custom ROMs built from source by installing xposed modules (especially complex ones) is definitely not a good way to go and can cause more trouble than good.

And finally, the last. GB being a complex module, it shouldn't be combined with other complex modules often racing for the same goal. They can conflict/fight on the same playground and there's no way you can deterministically say which one's going to win.
They can even lose both.

So in summary:
- this module is designed to run on vanilla or close-to-vanilla Android 4.4 (AOSP)
- supports "Google devices" like Nexus, HTC One Google play edition, and others running vanilla Android 4.4
- Samsung Touchwiz, HTC Sense, MIUI, LeWa, etc. are NOT supported. It is not guaranteed this module will work on these at all so try at your own risk. This module is simply too complex to support all kind of ROM brands that were vastly modified by vendors.
- DO NOT USE WITH CUSTOM ROMS LIKE CM,AOSPA,ROOTBOX,AOKP,SLIM, ETC... IT MAKES NO SENSE AND CAN CAUSE CONFLICTS AND UNEXPECTED BEHAVIOUR
- I will not implement any exceptions that will adapt this module to a specific custom ROM. Please, do understand, it is unmanageable.
- I will not provide any support for devices violating these compatibility rules