Inside tmux, screen or zellij your terminal title stays static instead of animating.
tengu_static_title_under_mux Not enough to sayNothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.
This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.236: off
Read once, for one account on one subscription tier, against v2.1.236. It isn't a statement about your account. What a flag value here can and cannot tell you
What's wrong with this entry?
When Claude Code detects a terminal multiplexer, it now renders a static terminal title instead of an animated spinner, and stops scheduling the animation timer at all. The gate tengu_static_title_under_mux defaults to true, so this is live for everyone in a multiplexer unless remote config turns it off.
- Detection uses the session's multiplexer info or the
TMUX,STYandZELLIJenvironment variables. - With the condition met, the spinner glyph is dropped from the title and no frame timer runs.
- Outside a multiplexer, nothing changes.
tengu_static_title_under_mux
Strings lifted out of the shipped bundle, so the claim above can be checked against them.