Unclear What this setting now controls is not stated, so what the new fallback changes is unknown.
Some of Claude Code's behaviour is controlled by remote settings that Anthropic's servers send. Each has a fallback value built into Claude Code for when the server sends nothing. For the setting tengu_synthetic_fog, that fallback changed from 0 to "/cwd". The server can still send a different value for any account.
tengu_synthetic_fog 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 v2.1.317: not a boolean we can read
These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.
Read once, for one account on one subscription tier, against v2.1.317. It isn't a statement about your account. What a flag value here can and cannot tell you
What this setting now controls is not stated, so what the new fallback changes is unknown.