From bba6d2894290244be847a6d4ee7722c82ec01c0e Mon Sep 17 00:00:00 2001
From: Richard Antalik <richardantalik@gmail.com>
Date: Fri, 4 Nov 2022 20:57:23 +0100
Subject: Fix T99641: Assert hit when splitting video sequencer area
 horizontally

Don't draw channels region when height is 0.
---
 source/blender/editors/space_sequencer/sequencer_channels_draw.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/source/blender/editors/space_sequencer/sequencer_channels_draw.c b/source/blender/editors/space_sequencer/sequencer_channels_draw.c
index 8abd7e424d1..901417c152f 100644
--- a/source/blender/editors/space_sequencer/sequencer_channels_draw.c
+++ b/source/blender/editors/space_sequencer/sequencer_channels_draw.c
@@ -357,6 +357,10 @@ void draw_channels(const bContext *C, ARegion *region)
   SeqChannelDrawContext context;
   channel_draw_context_init(C, region, &context);
 
+  if (round_fl_to_int(context.channel_height) == 0) {
+    return;
+  }
+
   UI_view2d_view_ortho(context.v2d);
 
   draw_channel_headers(&context);
-- 
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