Description of the problem:
Apologies if this is a repeat report. I was told to leave this here by an admin.

Background graphics appear fine in the main view, but when I click "reply" to the topic or "edit" a post, the background will change to that of another location. For example, hitting reply or edit on a post in Platform 9 3/4 will show London's snowy background instead of the train.

This is also happening in the Duelling Club where it reverts to the profile background and the Quidditch Pitch where it reverts to the Grounds background. Other locations are likely although I have not been active enough lately to discover them.

Screenshot:

Platform 9 3/4, main view:



Platform 9 3/4 after hitting "reply" or "edit", displaying London's background:



Error message:
N/A

Device and browser used:
PC, Microsoft Edge
PC, Firefox
iPad, Safari