[HTML5 - Openfl 8.9.1 - Lime 7.5.0] Substring error, length < 0

Haxe 3.4.7

The problem didn’t appear with the previous Openfl/Lime versions.
I know that it could be an HaxeDevelop error, but I’d like to know if someone got the same error and how often, because in my case it doesn’t popup at every compile, it looks pretty random.