Some topic titles are incorrectly cut (take 2)

[SergeyBiryukov]

Background: #1297, #1883

The issue has appeared in the last few days.

1. Create a topic on the forums with this title:
   WooCommerce. Добавить 2 картинки в миниатюру товара.
2. The last two characters are replaced with a broken character:
   WooCommerce. Добавить 2 картинки в миниатюру това�

The string length is 51 characters.

The topic title field has a maxlength of 80 characters. It looks like that limit is now enforced elsewhere, but without taking multibyte strings into account.

[SergeyBiryukov]

Fixed in [dotorg14671].

[Otto42]

Length has been extended to help fix the issue.