Highlight and write something on "Replace this string with your implementation."

Related user(s):

No response

Related issue(s) or PR(s):

No response

Related project scope(s):

web-app UI

Bug description:

When I open an exercice and highlight the string "Replace this string with your implementation." :

When I type a letter to replace the string, the letter appears after the two semicolons :

To reproduce:

No response

Expected behavior:

When I type letter on the highlighted text, the letter should appears before the two semicolons :

learn-ocaml --version

v1.0.0

git describe --long --always --abbrev=40 --tags

No response

What OS do you use?

GNU/Linux

What OS version/distribution do you use?

Ubuntu 20.04.6 LTS

What browser(s) do you use with learn-ocaml?

Firefox, Edge

What browser(s) version did you used to reproduce the issue?

Firefox115.6.0esr; Edge version 121.0.2277.83

Screenshots (if need be):

No response

Additional context:

No response

[AltGr]

Can indeed reproduce, thanks for reporting.
At the moment we are bound to a tweaked (and fixed) version of the Ace editor, which comes with many bugs and weirdnesses (in short, it is expected to allow our automatic-indentation mode, but provides no way to control concurrent operations, hence race conditions such as the one you are reporting).
The proper fix for this will probably be to plug-in a more modern and more reliable editor in place of Ace here, but that will require quite a bit of work.