Regarding gemini I have during a long time seen a pattern that serious bugs does not get any attention.
Some of the bugs I have reported I had to tweet to the staff to get any attention and even after that the bug does not go forward for months.
If you look in the statistics most closed bugs are wont fix or duplicates, The largest group of fixed real bugs are bugs from changes in the latest release before.
As I have reviewed lots of project in my days I can recognize the pattern from project that have a lot of attention from management to deliver new stuff but not have the time to take care of "old" bugs.
I can also recognie a pattern very common in a QA that are measured agains closed bugs not severe bugs. Eg its good for the team to close a few and put it as wont fix or dupicate before closing one severe bug.
Another feeling I get is that senior developer work with the new stuff and junior developers take care of the old bugs.
The advice I use to give in such cases is to in step one asign a responsible developer to the bug the first day the bug shows up in the system. If possible asign the person who developed the code.
There are a lot of other things you can do but this first step is the most important one.
If you analyse the latest releases and count real bugs fixed you will find the ratio of bugs fixed ar low very low.
Personaly I have almost stoped to report bugs as it dont seems to be worth the time to do it.