[LyX/master] Revert a9c6fb0c.

[Pavel Sanda]

commit 9c7030b36b37ff31955386d53493d501c38a8a35
Author: Pavel Sanda <sanda at lyx.org>
Date:   Thu Jul 27 22:39:49 2023 +0200

    Revert a9c6fb0c.
    
    Causes regression, see #12841.
---
 src/CoordCache.h |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/CoordCache.h b/src/CoordCache.h
index f26b6b2..f960c24 100644
--- a/src/CoordCache.h
+++ b/src/CoordCache.h
@@ -31,8 +31,10 @@ struct Geometry {
 
 	bool covers(int x, int y) const
 	{
-		return x >= pos.x_ && x < pos.x_ + dim.wid
-		       && y >= pos.y_ - dim.asc && y <= pos.y_ + dim.des;
+		return x >= pos.x_
+			&& x <= pos.x_ + dim.wid
+			&& y >= pos.y_ - dim.asc
+			&& y <= pos.y_ + dim.des;
 	}
 
 	int squareDistance(int x, int y) const