Cannot enter internal links with a querystring in TinyMCE

Hello,

I'm trying to insert a link to an internal page with a querystring in a TinyMCE field. We are using TinyMCE version 4.8.5 with Episerver 11.11.2.0

If I insert a page link in combination with the remaining URL field for the querystring, the querystring disappears after saving the page.

If I insert an external link, including the querystring, the link is changed into a Page link, with the querystring in the remaining URL field. This link is not shown in the page, and after opening the link editor, the querystring is visible, but disappears after clicking OK.

Is this a known bug? Does anybody have a solution for this?

Yours,

John Ligtenberg