diff --git a/tmux.h b/tmux.h
index 4ae6d6ad..be74a3a7 100644
--- a/tmux.h
+++ b/tmux.h
@@ -63,11 +63,8 @@ struct tmuxproc;
 #define TMUX_CONF "/etc/tmux.conf"
 #endif
 
-/*
- * Minimum layout cell size, NOT including separator line. The scroll region
- * cannot be one line in height so this must be at least two.
- */
-#define PANE_MINIMUM 2
+/* Minimum layout cell size, NOT including border lines. */
+#define PANE_MINIMUM 1
 
 /* Minimum and maximum window size. */
 #define WINDOW_MINIMUM PANE_MINIMUM
diff --git a/tty.c b/tty.c
index 906ee269..00f58d1c 100644
--- a/tty.c
+++ b/tty.c
@@ -1441,7 +1441,9 @@ tty_cmd_insertline(struct tty *tty, const struct tty_ctx *ctx)
 	    !tty_pane_full_width(tty, ctx) ||
 	    tty_fake_bce(tty, ctx->wp, ctx->bg) ||
 	    !tty_term_has(tty->term, TTYC_CSR) ||
-	    !tty_term_has(tty->term, TTYC_IL1)) {
+	    !tty_term_has(tty->term, TTYC_IL1) ||
+	    ctx->wp->sx == 1 ||
+	    ctx->wp->sy == 1) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
@@ -1463,7 +1465,9 @@ tty_cmd_deleteline(struct tty *tty, const struct tty_ctx *ctx)
 	    !tty_pane_full_width(tty, ctx) ||
 	    tty_fake_bce(tty, ctx->wp, ctx->bg) ||
 	    !tty_term_has(tty->term, TTYC_CSR) ||
-	    !tty_term_has(tty->term, TTYC_DL1)) {
+	    !tty_term_has(tty->term, TTYC_DL1) ||
+	    ctx->wp->sx == 1 ||
+	    ctx->wp->sy == 1) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
@@ -1524,7 +1528,9 @@ tty_cmd_reverseindex(struct tty *tty, const struct tty_ctx *ctx)
 	    !tty_pane_full_width(tty, ctx) ||
 	    tty_fake_bce(tty, wp, 8) ||
 	    !tty_term_has(tty->term, TTYC_CSR) ||
-	    !tty_term_has(tty->term, TTYC_RI)) {
+	    !tty_term_has(tty->term, TTYC_RI) ||
+	    ctx->wp->sx == 1 ||
+	    ctx->wp->sy == 1) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
@@ -1549,7 +1555,9 @@ tty_cmd_linefeed(struct tty *tty, const struct tty_ctx *ctx)
 	if (ctx->bigger ||
 	    (!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
 	    tty_fake_bce(tty, wp, 8) ||
-	    !tty_term_has(tty->term, TTYC_CSR)) {
+	    !tty_term_has(tty->term, TTYC_CSR) ||
+	    wp->sx == 1 ||
+	    wp->sy == 1) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
@@ -1586,7 +1594,9 @@ tty_cmd_scrollup(struct tty *tty, const struct tty_ctx *ctx)
 	if (ctx->bigger ||
 	    (!tty_pane_full_width(tty, ctx) && !tty_use_margin(tty)) ||
 	    tty_fake_bce(tty, wp, 8) ||
-	    !tty_term_has(tty->term, TTYC_CSR)) {
+	    !tty_term_has(tty->term, TTYC_CSR) ||
+	    wp->sx == 1 ||
+	    wp->sy == 1) {
 		tty_redraw_region(tty, ctx);
 		return;
 	}
diff --git a/window-copy.c b/window-copy.c
index 383f2c4e..78667b1e 100644
--- a/window-copy.c
+++ b/window-copy.c
@@ -1299,7 +1299,7 @@ window_copy_write_line(struct window_pane *wp, struct screen_write_ctx *ctx,
 	style_apply(&gc, oo, "mode-style");
 	gc.flags |= GRID_FLAG_NOPALETTE;
 
-	if (py == 0) {
+	if (py == 0 && s->rupper < s->rlower) {
 		if (data->searchmark == NULL) {
 			size = xsnprintf(hdr, sizeof hdr,
 			    "[%u/%u]", data->oy, screen_hsize(data->backing));