There's plenty of "rather serious professional mistakes" in whatever operating system you happen to run in the first place - it's very rare that something that doesn't affect security in any meaningful way gets the attention this has.
The last time i checked the whatever you type in browser, does not end up in text file or notepad. This does show the quality thinking about security. Oh we can enable when we want check things out rather than finding way to add and remove this after informing user