Clion debugging trouble

When using CLion to debug c++ code on Linux Mint, sometimes when I start debugging, the gui begins flashing and cycling repeatedly out of control and is unusable to debug. This is an intermittent problem because most of the time the debugger works beautifully. At first I thought this was a problem of having too many breakpoints enabled, but that isn't it because it is happening with only one. This has been happening for about a month. My program under development consists of a main and several dozen class files and headers. I am not using inheritance, and my general use of C++ is not needlessly complex.

I am using CMake as my build step, and I have tried cleaning and rebuilding, as well as terminating and re-starting CLion, but nothing I am doing seems to help with the situation.