[Bug] Slash and @ commands fail with long text or line breaks

Bug Description
the "/" and "@" commands are constantly stop working when I write long text or have line breaks. And now I cleared my prompt and I still can't use these commands. this CLI seems extremly buggy and basic. Very disapointing for a "premium" app

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.12
• Feedback ID: 4d61d84f-e93a-44a8-920e-8a8484646dc7

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/bjoern/.local/share/claude/versions/2.1.12 (expected in multi-process scenarios)\n    at HZR (/$bunfs/root/claude:3279:2091)\n    at aYA (/$bunfs/root/claude:3279:1202)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-01-20T22:16:26.416Z"}]