Steps to Reproduce:
-- install google chrome Version 73.0.3683.75 (Official Build) (64-bit) (windows 7)
-- open page on hewiki, whose name contains hebrew character, with at least one section (e.g., click "random page" repeatedly, until you find such)
-- edit a section with wikieditor (2010) (no need to change anything)
-- click "Publish changes"
Actual Results:
Page is saved (well, you won't be able to tell with null edit, but with real edit it is saved), and browser is directed to page with "Bad title" message.
full bad title page text:
```
Bad title
Jump to navigationJump to search
The requested page title contains invalid characters: "%D7".
Return to עמוד ראשי.
```
URL of bad title page:
https://he.wikipedia.org/wiki/%25D7%2595%25D7%2599%25D7%25A7%25D7%2599%25D7%25A4%25D7%2593%25D7%2599%25D7%2594:%25D7%2593%25D7%259C%25D7%25A4%25D7%25A7_%25D7%2599%25D7%2599%25D7%25A2%25D7%2595%25D7%25A5#%D7%9C%D7%90_%D7%9E%D7%A6%D7%9C%D7%99%D7%97_%D7%9C%D7%A7%D7%A9%D7%A8_%D7%9C%D7%95%D7%99%D7%A7%D7%99%D7%A6%D7%A8%D7%A4%D7%AA%D7%99%D7%AA
(did not know which team to assign this bug, so no tags on initial report)
Peace