Rendering Bug: RTL Line Wrapping overlaps with Context numbers #55913

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1. opencode-agent commented on Oct 16, 2026

   

   opencode-agentBot

   on Oct 16, 2026 – with OpenCode Agent

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   Thanks for the report and the GIF. I reproduced this on 2.0.26 in gnome-terminal (running under a virtual X display), using the free model and a long single-paragraph Arabic prompt, then scrolling up and down. On rows where the wrapped Arabic shares a line with the sidebar, sidebar text (the Context token count 6,369, the 1 from 1% used, the end of the session title) jumps to the left edge of the transcript. The Arabic also runs past the transcript into the sidebar. The recording and screenshots below show it, and the script below reproduces it.

   It still happens on the latest dev (e25b7ab), where the long Arabic message alone was enough to trigger it.

   Our guess, not yet confirmed: gnome-terminal (VTE) reorders each whole terminal row for right-to-left text, while OpenCode places every cell itself. So a row with Arabic plus sidebar text gets reordered as a unit. Terminals that don't reorder right-to-left text themselves shouldn't show this. Related, broader RTL issues: #39525 (aligning RTL text to the right in the TUI) and #16875 / #47982 (Arabic letters shown reversed or disconnected).

   recording.mp4

   

   

   

   Reproduction script (run-vte.sh)

   #!/bin/bash
   # Reproduce anomalyco/opencode#55913 in a real gnome-terminal (VTE, which applies its own BiDi).
   # Needs: gnome-terminal xvfb dbus-x11 xdotool imagemagick ffmpeg fonts-noto-core, and `opencode` on PATH
   # (or set OPENCODE_CMD). Uses the built-in free model. Records the screen to $OUT.mp4 and
   # saves screenshots $OUT-*.png.
   set -e
   OUT=${OUT:-/workspace/repro/vte}
   OPENCODE_CMD=${OPENCODE_CMD:-$(command -v opencode)}
   export DISPLAY=:99
   rm -f /tmp/.X99-lock
   Xvfb :99 -screen 0 1900x600x24 >/dev/null 2>&1 &
   sleep 2
   eval "$(dbus-launch --sh-syntax)"
   ffmpeg -loglevel error -y -f x11grab -framerate 10 -video_size 1900x600 -i :99 -pix_fmt yuv420p "$OUT.mp4" &
   FF=$!
   P="كان يا ما كان في قديم الزمان مدينة صغيرة تقع على ضفاف نهر عظيم تتدفق مياهه الصافية بين الحقول الخضراء الواسعة والبساتين المثمرة التي تمتد على مد البصر حيث كان الناس يعيشون في سلام ووئام ويتبادلون التحيات كل صباح ويجتمعون في المساء حول النار ليرووا الحكايات القديمة عن أجدادهم الذين بنوا هذه المدينة بأيديهم وصبرهم وعزيمتهم التي لا تلين أبدا مهما اشتدت الصعاب وتكاثرت التحديات من حولهم في كل مكان وزمان"
   PROMPT="$P $P $P $P $P $P"
   mkdir -p /tmp/rtl-proj && cd /tmp/rtl-proj && (git init -q 2>/dev/null || true)
   gnome-terminal --geometry=200x30 -- bash -c "$OPENCODE_CMD --standalone --prompt \"$PROMPT\"; sleep 600" &
   sleep ${WAIT:-40}
   import -window root "$OUT-1-after-response.png"
   xdotool mousemove 700 300
   for i in $(seq 1 15); do xdotool click 4; sleep 0.3; done
   sleep 1; import -window root "$OUT-2-scrolled-up.png"
   for i in $(seq 1 8); do xdotool click 5; sleep 0.3; done
   sleep 1; import -window root "$OUT-3-scrolled-down.png"
   for i in $(seq 1 4); do xdotool click 4; sleep 0.3; done
   sleep 1; import -window root "$OUT-4-scrolled-up-again.png"
   sleep 2
   kill -INT $FF; wait $FF || true

   Run it: bash run-vte.sh
2. opencode-agent

   added

   reproduced

   on Oct 16, 2026