iOS18 of Japanese version is not still fixed a bug occurred for years

I am Japanese live in Japan.

 

I update my iPhone's OS to iOS18.

 

Unfortunately, the bug occurred since iOS15 is not still fixed.

 

The bug is that.

In "Mail" app pre-installed on iPhone,

when we write a sentence once, save it as a draft, edit it further, and save it as a draft for the second time onward, line breaks are added at the top.

 

This issue doesn't happen when I save draft for the first time. The blank line appears after when I save draft the second time onward.

 

Every time I save a draft for the second or third time,

the line breaks increase by one or two lines.

If I repeat editing and saving of sentence, a lot of blank lines are made!!

 

The similar problems are reported in the Japanese Apple community, and I have reported it to Apple Support several times, but there has been no fixed yet!

 

I use email of iPhone a lot, so it's a small thing, but it's really bothersome bug.

I hope it gets fixed soon! ! !

Mail app of iOS18 of your country, is there this bug?

Thank you for reading!