Comment by actionfromafar
4 hours ago
Very true. And it sort of indicates that it is broken or at least unusual. If sending an email at least means "my email server has it now", then 20ms for that to happen would be a very unusual setup.
So if the dialog closes in 20ms if likely means the message was queued internally by the email client and then I would be worried that the queue will not be processed for whatever reason.
Yeah it's usually a problem with asynchronous UIs. You basically need to simulate a synchronous UI to make the interface seem reliable.
The file copy dialog in modern windows versions also has (had) this weird disconnect between the progress it's reporting and what it's actually doing. Seems very clear one thread is copying and one is updating the UI, and the communication between the two seems oddly delayed and inaccurate.
The progress reporting is very bizarre and sometimes the copying doesn't seem to start immediately. It feels markedly flakey.