Redmine

When entering an issue description or a note, all text after a 4-byte utf-8 character seems to get truncated.

To reproduce just create a new issue
in the description enter some text and a 4-byte utf-8 such a 🐳 and then some more text.
Then save the issue
All text after the 4-byte utf-8 will be gone from the ticket...

Entering a character using html-entities does work (eg 🐳). Copy-pasting a 4-byte utf-8 char fails. 3-byte utf-8 chars do work.

version/env: whatever demo.redmine.org is running.