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Leonard Hecker 2ce3004c58 Fix 5s lags when using OSC 52 clipboard copy (#20728)
Hilarious repro: `printf "\e]0;A\a\e]52;c;Qg==\a"`

This issue is exactly what happens when you Ctrl+X in a clean file in
msedit and it freezes Windows Terminal. It's because it puts a "•" in
the title and copies the text.

It triggers a title and clipboard change in the same frame which causes
the UI and VT thread to deadlock trying to get the console lock.

(cherry picked from commit 0626dc1457)
Service-Card-Id: PVTI_lADOAF3p4s4BBcTlzg9O_Qs
Service-Version: 1.24
2026-10-01 12:08:14 -05:00
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