Message 347666 - Python tracker

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Author	taleinat
Recipients	cheryl.sabella, taleinat, terry.reedy
Date	2019-07-11.10:00:18
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1562839219.15.0.3914256467.issue37559@roundup.psfhosted.org>
In-reply-to

Content
With code context shown, scrolling a window by dragging the scrollbar causes the scrollbar's tab to "jump around" and sometimes some "flashing" visual artifacts. The "flashing" appears to occur only before the screen is resized for the first time, in which case the entire window is resized whenever the number of context lines changes during scrolling. See attached animated screen capture. Reproduced on latest versions of Win10 and macOS. See also PR GH-14030, adding line numbers, which makes this more likely to occur for users.

With code context shown, scrolling a window by dragging the scrollbar causes the scrollbar's tab to "jump around" and sometimes some "flashing" visual artifacts.

The "flashing" appears to occur only before the screen is resized for the first time, in which case the entire window is resized whenever the number of context lines changes during scrolling.

See attached animated screen capture.

Reproduced on latest versions of Win10 and macOS.

See also PR GH-14030, adding line numbers, which makes this more likely to occur for users.

History
Date	User	Action	Args
2019-07-11 10:00:19	taleinat	set	recipients: + taleinat, terry.reedy, cheryl.sabella
2019-07-11 10:00:19	taleinat	set	messageid: <1562839219.15.0.3914256467.issue37559@roundup.psfhosted.org>
2019-07-11 10:00:19	taleinat	link	issue37559 messages
2019-07-11 10:00:18	taleinat	create