Io.Queue deadlocks

[myclevorname]

Zig Version

0.16.0-dev.1459+9082b004b

Steps to Reproduce and Observed Behavior

1. Clone https://codeberg.org/clevor/z9/ qt branch queue-bug
2. Run zig build run without LLVM due to Proposal: initial @bitCast semantics (packed + vector + array) #19755
3. A just before getOne is printed without a corresponding just after getOne, even though just after putOne occurs right below

[clevor@clevor-laptop-nixos:~/Code/zig/z9]$ llzig build run
debug(z9): want to send version
debug(z9): just before putOne, sending version
debug(z9): just after putOne, sent version
debug(z9): check new message to receive
debug(z9): just before getOne
debug(z9): just after getOne
debug(z9): start to send version
debug(z9): fully finished version in sendMessages
debug(z9): just before getOne
debug(z9): check new message to receive
debug(z9): want to send attach
debug(z9): just before putOne, sending attach
debug(z9): just after getOne
debug(z9): start to send attach
debug(z9): fully finished attach in sendMessages
debug(z9): just after putOne, sent attach
debug(z9): just before getOne
debug(z9): want to send walk
debug(z9): just before putOne, sending walk
debug(z9): just after putOne, sent walk
debug(z9): check new message to receive

Expected Behavior

The message is successfully received from the Queue.