commit f0b60d0b4e8998b25675317fa53c3279d57d0af7
Author: Jean-Marc Lasgouttes <lasgout...@lyx.org>
Date:   Wed Feb 8 12:28:01 2023 +0100

    fix comment.
---
 src/frontends/qt/GuiWorkArea.cpp |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/frontends/qt/GuiWorkArea.cpp b/src/frontends/qt/GuiWorkArea.cpp
index 31cfec1..cc1fdb5 100644
--- a/src/frontends/qt/GuiWorkArea.cpp
+++ b/src/frontends/qt/GuiWorkArea.cpp
@@ -1241,9 +1241,10 @@ void GuiWorkArea::paintEvent(QPaintEvent * ev)
        // bug #10989). The second test triggers when in the middle of a
        // dispatch operation.
        if (view().busy() || 
d->buffer_view_->buffer().undo().activeUndoGroup()) {
-               // Since macOS has turned the screen black at this point, our
-               // backing store has to be copied to screen (this is a no-op
-               // except on macOS).
+               // Since the screen may have turned black at this point, our
+               // backing store has to be copied to screen. This is a no-op
+               // except when our drawing strategy is "backingstore" (macOS,
+               // Wayland, or set in prefs).
                d->updateScreen(ev->rect());
                // Ignore this paint event, but request a new one for later.
                viewport()->update(ev->rect());
-- 
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