I’m finding that IEx hangs and stops accepting input immediately on start from Windows 11. I see an iex> prompt and can get no further. The app does apparently continue to run, log output continues, but I cannot make further input.

PS > elixir -v
Erlang/OTP 26 [erts-14.2.1] [source] [64-bit] [smp:24:24] [ds:24:24:10] [async-threads:1] [jit:ns]

Elixir 1.16.0 (compiled with Erlang/OTP 26)

I’m using OTP 26.2.1 + Elixir 1.16.

I have also tried OTP 25 which doesn’t seem to exhibit the same problem but comes with its own annoyances in the form of werl.exe.

I know that there were a few console issues that were introduced with OTP 26, some of which (but perhaps not all) were addressed in 26.2.

Does anyone know how I can get more information out of the system to see what’s going wrong (or even how to fix it, which would be most welcome)?