Reassuring to hear I'm not the only one, and would consider this a normal use case for the browser, in fact one of the main reasons I use Firefox over chrome as it's simpler to manage than the latter.

I was hinting in my original comment if these cases are contributing to crash reports in any capacity there is a small chance they could be misattributed towards the claims in the post, especially if memory is not freed correctly on shutdown. Even more so if any memory allocation is shared between processes / helpers.

If I quit normally, don't wait for the "timeout" and force quit I still get the crash report UI immediately which suggests to me something funky going on.

10% is a crazy high percentage to claim for bitflips.