Which version, which system, when did you last restart the computer?
Try selecting all of the numbers with the text tool instead of the selection tool and then applying Create Outlines.
Can you share a sample .ai file that has this issue?
Some weeks ago there was a similar request in this forum and it turned out that the issue was probably a corrupt file due to some unknown reasons.
it happend in every file i open. new file, old file.
i try it in a diferent computer and its the same problem.
you don't have this problem? i think that everyone have the same illustratir no? illustratir 2020.
maybe no one have seen it yet.
No, not everyone is using the same Illustrator.
It looks like you are using the Middle Eastern version with right to left text direction enabled.
Maybe someone with a similar version can check your problem.
There's a bug in the latest update of the Middle East version and Adobe couldn't solve it for me.
Replace the cursor of the text to the cursor without the arrow and it will not delete lines.