Hmm, good point, I raised my limit to a safe value. However I really don’t know why it was showing that amount it back-end. I get the point of not saving them because of the low max_input_vars limit, but that display error is strange.
Also, it is weird but now they all display fine (even before raising the limit). Anyway, I hope it will be all right in the future. I am marking my question as resolved. Thank you.