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1. opencode-agent commented on Oct 17, 2026

   

   opencode-agentBot

   on Oct 17, 2026 – with OpenCode Agent

   Contributor

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   Thanks for the detailed report. I was able to reproduce this on 2.0.32, and it still happens on the latest dev (bc5fa1c).

   Steps:

   1. Write a cli.json with session.sidebar: "hide", a cursor setting, and a top-level "leader": "ctrl+x".
   2. Start the TUI and send a prompt. The sidebar is still shown, and no warning appears.
   3. Remove only the leader line and start again. The sidebar is hidden as configured.

   The recording and screenshots below show both runs, and the script below reproduces it.

   The v2 loader validates cli.json as a whole and falls back to empty settings if any field is invalid, without telling you. Your workaround (moving the leader key to keybinds.leader) is the right one for now.

   Related:

   • invalid opencode.json is silently ignored #54786 / fix(core): surface rejected config files instead of ignoring them #54804: the same silent-ignore problem for opencode.json. That PR makes it visible on stderr but doesn't cover cli.json or add an in-TUI notice.
   • tui: one malformed custom theme file silently disables all custom themes #44263: one malformed theme file silently disables all custom themes.

   recording.mp4

   

   

   Reproduction script (drive.ts)

   // Repro for anomalyco/opencode#56318: one invalid cli.json field silently discards the whole file.
   // TUI 1: cli.json has session.sidebar "hide" + an invalid top-level `leader: "ctrl+x"` -> sidebar still shown, no warning.
   // TUI 2: same file without `leader` -> sidebar hidden as configured.
   import { Effect } from "effect"
   import { Llm, OpenCodeDriver } from "opencode-drive"
   import { existsSync, readFileSync, writeFileSync } from "node:fs"
   import { join } from "node:path"
   
   const valid = {
     session: { sidebar: "hide" },
     cursor: { style: "line", blinking: false },
   }
   
   export default OpenCodeDriver.use(
     {
       ...(process.env.OC_DEV ? { opencode: { dev: process.env.OC_DEV } } : {}),
       project: { git: true },
       setup: ({ tuiConfig }) =>
         Effect.sync(() => {
           Object.assign(tuiConfig as Record<string, unknown>, valid, { leader: "ctrl+x" })
         }),
       tui: { recording: true, viewport: { cols: 160, rows: 40 } },
     },
     ({ ui, llm, tuis, artifacts }) =>
       Effect.gen(function* () {
         yield* llm.queue(Llm.text("Hello from the invalid-config run."))
         yield* ui.submit("hello")
         yield* ui.waitFor("Hello from the invalid-config run.")
         yield* Effect.sleep(1500)
         yield* ui.screenshot("1-invalid-leader-sidebar-still-visible")
   
         // Same config minus the invalid `leader` field
         const file = join(artifacts, "files", ".opencode", "cli.json")
         if (!existsSync(file)) return yield* Effect.die(new Error(`missing ${file}`))
         yield* Effect.log(`cli.json used by TUI 1:\n${readFileSync(file, "utf8")}`)
         writeFileSync(file, JSON.stringify(valid, null, 2))
         const second = yield* tuis.launch({ recording: true, viewport: { cols: 160, rows: 40 } })
         yield* llm.queue(Llm.text("Hello from the valid-config run."))
         yield* second.ui.submit("hello")
         yield* second.ui.waitFor("Hello from the valid-config run.")
         yield* Effect.sleep(1500)
         yield* second.ui.screenshot("2-valid-sidebar-hidden")
       }),
   )

   Run it with opencode-drive: opencode-drive run ./drive.ts. It drives opencode from your PATH; set OC_DEV to the path of an OpenCode checkout to run that from source instead.
2. opencode-agent

   added

   reproduced

   on Oct 17, 2026