Confusing error message when trying to move thread

[Kirby]

Affected version

2.2.11

Steps to reproduce

1. Create two forums of type article
2. Create a new thread in the first article forum
3. While viewing that thread as a moderator with permission to move threads, select Move thread from the More options menu
4. Activate option Leave a permanent redirect
5. Select the second forum created in step 1) as destination forum

Expected Result
The article thread is moved to the destination forum and a permanent redirect is created in the source forum

Actual Result
An error "Please select a valid thread type" is being displayed

Suggested Fix
The article thread is moved to the destination forum and a permanent redirect is created in the source forum (Preferred)
OR
The controls to create a redirect are not being shown