web: on mobile, Enter submits the prompt and no newline can be inserted #55549

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1. opencode-agent commented on Oct 14, 2026

   

   opencode-agentBot

   on Oct 14, 2026 – with OpenCode Agent

   Contributor

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   Thanks for the detailed report. I can confirm this on v2.0.29, and it still happens on the latest dev (3943b84).

   What I did: I ran opencode serve and opened the web UI in Chromium emulating an Android phone (touch, mobile, pointer: coarse). In a session, I tapped the prompt, typed "first line", pressed Enter and typed "second line". Enter sent "first line" as a prompt right away, and the box was left holding only "second line". No newline was inserted. The script below reproduces it, and the screenshots show the result.

   The composer's key handler (packages/app/src/composer/editor/editor.tsx, onKeyDown) submits on any Enter without Shift, with no special case for touch or mobile.

   Related issues: #20965 (an earlier report, closed for inactivity), #43088 (configurable prompt shortcuts in the app) and #55341 (configurable Enter behaviour on desktop).

   

   

   Reproduction script (mobile-enter.mjs)

   // Reproduces anomalyco/opencode#55549: on a mobile (touch) browser, Enter in the
   // web composer submits the prompt instead of inserting a newline.
   // Usage: start `opencode serve --hostname 127.0.0.1 --port 4096` in a project dir,
   // then: OC_URL=http://127.0.0.1:4096 OC_PASSWORD=<server password> node mobile-enter.mjs
   import { chromium, devices } from "playwright"
   
   const url = process.env.OC_URL ?? "http://127.0.0.1:4096"
   const browser = await chromium.launch()
   const context = await browser.newContext({
     ...devices["Pixel 7"], // Android Chrome: touch, isMobile, coarse pointer
     httpCredentials: { username: "opencode", password: process.env.OC_PASSWORD ?? "" },
   })
   const page = await context.newPage()
   const prompts = []
   // Intercept prompt submissions so nothing reaches a model.
   await page.route(/\/api\/session\/[^/]+\/prompt/, (route) => {
     if (route.request().method() === "POST") {
       prompts.push(route.request().postData())
       return route.fulfill({ status: 200, contentType: "application/json", body: "{}" })
     }
     return route.continue()
   })
   
   if (process.env.OC_PAIR) {
     await page.goto(process.env.OC_PAIR) // one-time link from `opencode pair --url <url>`
   } else {
     await page.goto(url)
     // Connect with the server password via the "Use password" flow.
     await page.getByText("Use password").click()
     await page.waitForTimeout(500)
     const inputs = page.locator("input:visible")
     console.log("login inputs:", await inputs.count(), await page.locator("input:visible").evaluateAll((els) => els.map((e) => e.outerHTML)))
     for (const el of await inputs.all()) {
       const type = await el.getAttribute("type")
       const v = await el.inputValue()
       if (type === "password") await el.fill(process.env.OC_PASSWORD ?? "")
       else if (!v) await el.fill(url)
     }
     await page.screenshot({ path: "/workspace/repro/0-login.png" })
     await page.keyboard.press("Enter")
   }
   await page.waitForTimeout(4000)
   // Create a session through the API and open it.
   const auth = "Basic " + Buffer.from("opencode:" + (process.env.OC_PASSWORD ?? "")).toString("base64")
   const created = await fetch(new URL("/api/session?directory=" + encodeURIComponent(process.env.OC_DIR ?? process.cwd()), url), {
     method: "POST",
     headers: { authorization: auth, "content-type": "application/json" },
     body: "{}",
   }).then((r) => r.json())
   const sessionID = created.data.id
   await page.goto(new URL(`/server/${Buffer.from(url).toString("base64")}/session/${sessionID}`, url).href)
   await page.waitForTimeout(4000)
   await page.screenshot({ path: "/workspace/repro/0-loaded.png" })
   
   const editor = page.getByRole("textbox", { name: "Prompt", exact: true })
   await editor.waitFor({ timeout: 20000 })
   await editor.tap()
   await page.keyboard.type("first line")
   await page.screenshot({ path: "/workspace/repro/1-typed.png" })
   await page.keyboard.press("Enter") // the soft keyboard's Enter key
   await page.keyboard.type("second line")
   await page.waitForTimeout(1500)
   await page.screenshot({ path: "/workspace/repro/2-after-enter.png" })
   
   const text = await editor.innerText().catch(() => "<editor gone>")
   console.log("matchMedia(pointer: coarse):", await page.evaluate(() => matchMedia("(pointer: coarse)").matches))
   console.log("prompt POSTs after Enter:", prompts.length, prompts)
   console.log("editor text after Enter + 'second line':", JSON.stringify(text))
   console.log(
     prompts.length > 0 || !text.includes("first line")
       ? "BUG REPRODUCED: Enter submitted the prompt instead of inserting a newline"
       : "Not reproduced: Enter inserted a newline",
   )
   await browser.close()

   Run it: bun mobile-enter.mjs
2. opencode-agent

   added

   reproduced

   on Oct 14, 2026
3. kanswer commented on Oct 18, 2026

   

   kanswer

   on Oct 18, 2026

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   I ran into this too and opened a PR: #56664

   Plain Enter now inserts a line break in the composer when the device reports no hover pointer (phones/tablets), while the send button submits the whole prompt. It uses the same insertion path as desktop Shift+Enter, so multi-line prompts come through as a single prompt; desktop and Mod+Enter behavior are unchanged.
4. joelrbrandt commented on Nov 1, 2026

   

   joelrbrandt

   on Nov 1, 2026

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   Just a heads up: on iOS 27 Safari with the default iOS keyboard, new lines can be entered in the composer by toggling "shift" on and then tapping enter.

   It is possible that other iOS keyboards don't pass shift state through on sending the enter key.

   👍React with 👍1Reacted by amz
5. Hona

   closed this as completedin #61773on Nov 4, 2026