For me the one deep flaw in Ubuntu MATE is that it includes brisk menu.
Thing is since it wondered its way into Ubuntu mate its been nothing but trouble.
It crashes, you cant customize it, you cant tweak it.
Frankly it sucks
It may be okay in solus and budgie but it really isnt that great under MATE.
Thankfully I can remove it and replace it but I am still not happy it comes as default, until it gets stable and the ability to change how it looks and all that it will not be on my Ubuntu MATE setup.