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UIA in Console: unable to access terminal after scrolling of long text #11740
Description
Steps to reproduce:
- Ensure that "Use UI Automation to access the Windows Console when available" is enabled.
- Open cmd or powershell.
- Execute the follow line to generate some random text (you can use many other solutions for that like read a huge file using 'cat'):
wsl head -c 5000000 /dev/urandom|tr -dc "\u20-\u80"|fold -w80 - Wait until the previous command is finished (i.e. until the prompt is back).
- Move in another window/go to desktop.
- Return to cmd.
Actual behavior:
We can't access to the Terminal content. No problem if UIA in Window Consoles is disabled.
Expected behavior:
We should explore the Terminal.
System configuration
NVDA installed/portable/running from source:
Installed
NVDA version:
alpha-21145,ac31a795
Windows version:
Windows 10 Insider (64-bit) build 20231.1000
Name and version of other software in use when reproducing the issue:
cmd, powershell
Other information about your system:
Other questions
Does the issue still occur after restarting your computer?
Yes
Have you tried any other versions of NVDA? If so, please report their behaviors.
No
If addons are disabled, is your problem still occuring?
Yes
Did you try to run the COM registry fixing tool in NVDA menu / tools?
No
Activity
codeofdusk commentedon Oct 12, 2020
This is microsoft/terminal#5481 (fixed in #11639). In future, when creating UIA console issues, please mention me (@codeofdusk) and @carlos-zamora. Thanks!
Technical: pre-21H1, UIA console ended each new line of text with a newline character (
\r\n). Therefore,_getTextLinessimply did asplitlineson all text. In 21H1, lines can wrap so this optimization is no longer sufficient.Fix _getTextLines for 21H1 UIA console (PR #11760)
AAClause commentedon Nov 8, 2020
Issue not fully solved for me (NVDA alpha-21312,cb82f504, Windows 10 Insider build 20251.1). It happens less often since #11639 was merged but still occurs. Tested with add-ons disabled.
codeofdusk commentedon Nov 8, 2020
#11639 isn't in yet, but #11760 should've fixed this.
codeofdusk commentedon Nov 8, 2020
Oh, never mind, I see what the issue is! This is a duplicate of #11002.
AAClause commentedon Nov 8, 2020
My bad. Thanks for the precision, I missed your issue.