I don’t know whether the fix in July 2021 really fixed the issue (CG claimed to have fixed it in response to the previous post @demmatze ) or not, but another player raised an issue in April 2022 in this post, and I myself have experienced in various puzzles many times of having to submit my solution a few times (or even a dozen of times) for it to finally pass all the validators, instead of timing out in different validators every time.
Would @_CG_ClementHammel please take a look at this issue again? Thanks.