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Claude Code Issues / #10387

[Bug] IntelliJ Plugin generates excessive terminal control sequence warnings (ESC[?2026)

Status Fixed / completed
Maintainer reply None cached
Activity 3 comments · opened Oct 26, 2025 · closed Oct 27, 2025

Bug Description
Running Claude Code with the IntelliJ Plugin leads to many warnings (>100 per second) in the IDEA log:

2025-10-26 19:11:22,661 [1057872] WARN - com.jediterm.terminal.emulator.JediEmulator - Unhandled Control Sequence (parsed: ESC[?2026l, raw: ESC[?2026l)
2025-10-26 19:11:22,685 [1057896] WARN - com.jediterm.terminal.emulator.JediEmulator - Unhandled Control Sequence (parsed: ESC[?2026h, raw: ESC[?2026h)
2025-10-26 19:11:22,686 [1057897] WARN - com.jediterm.terminal.emulator.JediEmulator - Unhandled Control Sequence (parsed: ESC[?2026l, raw: ESC[?2026l)
2025-10-26 19:11:22,719 [1057930] WARN - com.jediterm.terminal.emulator.JediEmulator - Unhandled Control Sequence (parsed: ESC[?2026h, raw: ESC[?2026h)
2025-10-26 19:11:22,720 [1057931] WARN - com.jediterm.terminal.emulator.JediEmulator - Unhandled Control Sequence (parsed: ESC[?2026l, raw: ESC[?2026l)

Environment Info

  • Platform: darwin
  • WebStorm/IntelliJ IDEA Ultimate/GoLand (all latest and previous versions)
  • Feedback ID: 524a6bfd-f6f3-4d06-9d97-1578b65062b7

Errors

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