bug#62072: 29.0.60; tree-sitter interferes with Custom

[Po Lu]

I don't see the problem with ruby-ts-mode on emacs-29 after doing `make
bootstrap', but I still see it on master.

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Po Lu <luangruo@yahoo.com>
>> Cc: 62072@debbugs.gnu.org
>> Date: Fri, 10 Mar 2023 08:32:44 +0800
>> 
>> Eli Zaretskii <eliz@gnu.org> writes:
>> 
>> > No, not necessarily.
>> 
>> Why?
>
> Because it's a known issue for which there's no known way of fixing it
> without causing worse problems.  And because the problem is not very
> severe and happens in relatively rare use cases.

Why is this?