Take Screenshot doesn't take screenshot instantly, but after filename is specified.

[Explorer09]

The "Take Screenshot" feature does not take the screenshot instantly like I expect. Rather it takes the screenshot after I specify the file name for the screenshot.

This makes me very hard to capture critical moments in the VM guest, for example, when copying some files and when the "copying files" dialog can disappear within seconds.

Step to produce:

1. It is best to test this on Windows, where there's a Date and Time settings panel to show the current time in seconds.
2. Bring up the Date and Time settings panel.
3. When the clock shows "08:00:00 AM", press Host+E quickly.
4. Wait for at least 10 seconds, then press Save or OK on the "Select a filename" dialog box.
5. See the clock on the screenshot says "08:00:10 AM".

Note: I've read Ticket #11474 before reporting this problem, and no, I don't want to record a video. I want still images of critical moments of the VM guest.

[Frank Mehnert]

This was fixed in VBox 5.0.10.