[MlMt] Losing keyboard focus on message body after downloading external resources

[Glenn Parker]

Mailmate version(s) 6255-6270

This is an awkward UI issue, and persistent but minor annoyance, but it 
happens with many/most messages: I double-click in a message list to 
open a message in a new window. At the top there is a yellow banner 
saying, e.g., “Detected 27 external resources” along with a button 
to “Download (27)”.

If I use the arrow keys right away, I can scroll this message up and 
down, but of course the external resources are shown only as 
placeholders. Note that I strongly prefer the keyboard to the 
mouse-wheel/scrollbars for scrolling.

After I click on the banner button, I often end up with a red banner 
that says “An image with a pixel size of 1 by 1 has been 
downloaded”. Fine, I understand how tracker pixels work. Other times, 
I get another banner that offers to download more objects, but 
eventually the message is fully expanded.

Oddly it’s not 100% but, most of the time, the arrow keys will now 
beep at me instead of scrolling the message. It appears the keyboard 
focus on the message window has been lost so the arrow keys no longer 
apply. Clicking inside the message window again allows the arrows keys 
to work as expected.

It’s annoying because I don’t expect the keyboard focus to be lost 
simply by expanding the contents of the message body. I suspect that 
reloading the message with expanded content essentially creates a new 
window that does not retain the focus from the previous (unexpanded) 
view. I really want MailMate to force the keyboard focus back to the 
updated message body.

Glenn P. Parker
glenn.parker at comcast.net
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