Steps to replicate the issue (include links if applicable):

Note that the STR involves revealing your IP address to the world. Use a VPN if you don't want that.

• Ascertain your IP address
• In your main window, using your logged-in SUL account, leave a message on your IP's talk page on enwiktionary
• In the incognito/private window, go to any Wiktionary page other than the IP talk page

What happens?:
No OBOD appears

What should have happened instead?:
The OBOD should have appeared

I performed the STR on testwiki and the OBOD appeared just as it should have.