While the story at the end about the bug report is humourous, it's a pretty mean thing to do. Perhaps 3 days lost work was longer than the expected damage, but one would imagine it would waste at least a few hours of someone's time, which is not something I'd feel good about. On an unrelated note, sometimes using a computer not configured to British English I get spelling corrections for words like "humourous" above,…
Interestingly, while humor/humour is a US/British difference, humorous/humourous is not, the latter is just rare/unusual. https://en.wiktionary.org/wiki/humour https://en.wiktionary.org/wiki/humourous
Ah I see, thanks, there are certainly better examples though, after a few minutes I found 'unshakeable'* which google tries to correct to the American version, yet is standard British English.
* https://www.google.co.uk/search?q=unshakeable (even makes the mistake on the UK Google site).