https://github.com/tmux/tmux/issues/4732
https://github.com/tmux/tmux/commit/afa05ae15ed7129690e42a6f207b6488ff86bee9

From afa05ae15ed7129690e42a6f207b6488ff86bee9 Mon Sep 17 00:00:00 2001
From: nicm <nicm>
Date: Mon, 8 Dec 2025 21:32:50 +0000
Subject: [PATCH] Use correct style for bottom line when pane status line is
 on, GitHub issue 4732.

---
 screen-redraw.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/screen-redraw.c b/screen-redraw.c
index db5187088..0dda2feae 100644
--- a/screen-redraw.c
+++ b/screen-redraw.c
@@ -197,9 +197,11 @@ screen_redraw_pane_border(struct screen_redraw_ctx *ctx, struct window_pane *wp,
 		} else { /* sb_pos == PANE_SCROLLBARS_RIGHT */
 			if ((wp->xoff == 0 || px >= wp->xoff) &&
 			    (px <= ex || (sb_w != 0 && px < ex + sb_w))) {
-				if (wp->yoff != 0 && py == wp->yoff - 1)
+				if (pane_status != PANE_STATUS_BOTTOM &&
+				    wp->yoff != 0 &&
+				    py == wp->yoff - 1)
 					return (SCREEN_REDRAW_BORDER_TOP);
-				if (py == ey)
+				if (pane_status != PANE_STATUS_TOP && py == ey)
 					return (SCREEN_REDRAW_BORDER_BOTTOM);
 			}
 		}
@@ -380,7 +382,6 @@ screen_redraw_check_cell(struct screen_redraw_ctx *ctx, u_int px, u_int py,
 
 		/* Check if CELL_SCROLLBAR */
 		if (window_pane_show_scrollbar(wp, pane_scrollbars)) {
-
 			if (pane_status == PANE_STATUS_TOP)
 				line = wp->yoff - 1;
 			else