Created attachment 614594 [details] stack trace Every time you close the program, it crashes. It doesn't affect normal usage, but I noticed the core files being generated.
Created attachment 614596 [details] emerge --info
Please try with 4.2.8.2-r2.
It doesn't seem to happen with version 4.2.8.2-r2
Thanks for checking back, 4.2.8.2-r2 is already being stabilised.