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ConPTY: Non-DECCRA/DECFRA scrolling produces incorrect results #20773

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Due to #20772, we discovered that applications using scroll regions without rectangular area operations look wrong. Such as vi from 1996, failing to clear the screen in Terminal and drawing the text buffer on top of the old content.

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  1. added
    Needs-TriageIt's a new issue that the core contributor team needs to triage at the next triage meeting
    Needs-Tag-FixDoesn't match tag requirements
    on Oct 6, 2026
  2. added a commit that references this issue on Oct 8, 2026
    5951f69
  3. moved this from To Cherry Pick to Cherry Picked in 1.25 Servicing Pipelineon Oct 26, 2026
  4. moved this from To Cherry Pick to Cherry Picked in 1.26 Servicing Pipelineon Oct 26, 2026
  5. added 2 commits that reference this issue on Oct 26, 2026
    53d40be
    3f770ad
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    Needs-Tag-FixDoesn't match tag requirementsNeeds-TriageIt's a new issue that the core contributor team needs to triage at the next triage meeting

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