On Fedora 44, Trying to interact with tree-sitter causes Zed to crash. Viewing and editing plain text files works fine, but opening any source code file triggers an immediate freeze during parsing.
According to this issue and this issue in the Zed repository, this only affects packaged versions (e.g. those distributed by Terra and pgdev/zed Copr repository). The official builds work perfectly fine and serve as a workaround for those who wish to avoid downgrading Fedora.
In a dedicated issue in Terra repository, a user discovered that the issue may be caused by the rustc compiler shipped with Fedora 44, and a bug report has been filed on Bugzilla. Unfortunately, no further progress has occurred.