Bug Description

Recently I made a lot of test in the forum to validate the wysiwyg editor TinyMCE
I have a dedicated thread in which I post tests messages since a long time (the first message of the thread is from 2007 !!) , so it have a lot of pages.
I was testing the capability to edit old messages, let say from page 4. When I was done and click on "Update reply" , the forum bring me back on the first page to the first message which is quite annoying !

How to Reproduce

Take a long thread in the forum, several pages.
Take a message at the end of the thread and select "Edit"
Do what you want
Click "Update reply"
You are back to the first page

Expected Behavior

I was expecting to see the modified message