How long is “a while”? I’ve had it open for around 30 minutes now and I’m not seeing what you’re describing. Around the 15 minute mark I also tried clicking through various tabs, performing some actions, etc. and memory usage is still staying steady at 247MiB.
Scotland here. We don’t boil water before use.
I have family down in North West England that do have to do this, though. They live in an area where there is a thin layer of soil and a lot of clay. The water isn’t particularly hard but it also doesn’t taste very nice if you don’t boil it first.
That is a very good question. Short answer: I don’t know as I am not familiar with the project.
I have had a brief look at the issue tracker and it doesn’t seem to be mentioned on there. Perhaps I will raise an issue later when I am at my computer (or if anyone else beats me to it then please feel free).