Sorry to hear that this is causing problems for you. We are currently looking into fixing the problem. As a workaround you can press the “shift” key and move the mouse during bootup this will make the login quicker. Regarding the testing - I can assure you that we test snapd very carefully, we run thousands of tests each time we change snapd. However when something external like the kernel changes behaviour we can’t do anything to foresee that. We are working on a fix now that we know what is going on.
[edit: spelling]