Follow Discord
Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Code CLI 19 Oct 2026
One change · claude-code

Fullscreen rendering changedfullscreen

Nearest release: v2.1.304, published under an hour before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 19 Oct 2026 19:52 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 20 Oct 2026 18:37 UTC.

Upstream edited
Recorded here
Lines+7added
Lines−9removed
From line 2 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits29to this page, all time

### `Claude Code's fullscreen renderer didn't finish starting last time` appears at startup

The whole hunk

from line 2, old and new numbered
/
lines
from line 2
22 
33> Enable a smoother, flicker-free rendering mode with mouse support and stable memory usage in long conversations.
44 
5<Note>
6 Fullscreen rendering is a [research preview](#research-preview). Whether you [start in fullscreen or in the classic renderer](#fullscreen-by-default) depends on your setup. Run `/tui fullscreen` or `/tui default` to switch in your current conversation. Behavior may change based on feedback.
7</Note>
5> [!NOTE]
6>
7> Fullscreen rendering is a [research preview](#research-preview). Whether you [start in fullscreen or in the classic renderer](#fullscreen-by-default) depends on your setup. Run `/tui fullscreen` or `/tui default` to switch in your current conversation. Behavior may change based on feedback.
88 
99Fullscreen rendering is an alternative rendering path for the Claude Code CLI that eliminates flicker, keeps memory usage flat in long conversations, and adds mouse support. It draws the interface on the terminal's alternate screen buffer, like `vim` or `htop`, and only renders messages that are currently visible. This reduces the amount of data sent to your terminal on each update.
1010 
1111The difference is most noticeable in terminal emulators where rendering throughput is the bottleneck, such as the VS Code integrated terminal, tmux, and iTerm2. If your terminal scroll position jumps to the top while Claude is working, or the screen flashes as tool output streams in, this mode addresses those.
1212 
13<Note>
14 The term fullscreen describes how Claude Code takes over the terminal's drawing surface, the way `vim` does. It has nothing to do with maximizing your terminal window, and works at any window size.
15</Note>
13> [!NOTE]
14>
15> The term fullscreen describes how Claude Code takes over the terminal's drawing surface, the way `vim` does. It has nothing to do with maximizing your terminal window, and works at any window size.
1616 
1717## Enable fullscreen rendering
1818 
from line 294
294294 
295295On Windows, Claude Code already enables full repaint automatically for background sessions and [agent view](/docs/en/agent-view), so you only need to set the variable for an interactive fullscreen session you launched directly.
296296 
297<h3 id="fullscreen-renderer-didnt-finish-starting">
298 `Claude Code's fullscreen renderer didn't finish starting last time` appears at startup
299</h3>
297### `Claude Code's fullscreen renderer didn't finish starting last time` appears at startup
300298 
301299If a fullscreen session on this machine crashes before it has started successfully, Claude Code starts your next session in the classic renderer and prints one of two lines. A session has started successfully once it has drawn its first frame and then either stayed up for 10 seconds or you ended it with `/exit`, Ctrl+C, or Ctrl+D. The line you see tells you what Claude Code does after this session:
302300 
Feedback