Delete event of member of a control set

I cannot delete an event handler from a control set without getting an error, saying that the name is missing. I seem to able to just use Cut instead of Delete but controls sets have been so buggy since the start of Xojo. Is anybody else getting this problem? Is Xojo even properly tested? Maybe I should work for Xojo, if they do not have enough testers for the software. If any job offers are going, please take in mind, I can only work from where I live in the UK. I honestly believe that they need to employ someone who would actually test everything properly. Surely, with the amount of people who buy Xojo they can afford to employ a bug tester without damaging the pricing of the software.