I created a new “Truck Schedule” feature in our Sandbox. It works great and I can filter the list page as expected, however when I attempt to save the filtered view of the list page, I’m experiencing the “something went wrong” error. I tested other list pages and they’re working fine. The error appears to be limited to the new feature list page.

An update here… Other users have been able to save filtered views just fine. 1) First, I thought maybe it was a permission thing. I already had super permissions but I added the feature to my permission set. Same error. 2) I looked at Chrome browser versions–they were the same. 3) Finally, I remembered having encountered saved filtering issues after personalizations. I had not personalized my new feature list page but I cleared personalizations and now it lets me save filters just fine.
Yes, Microsoft bug.
Version: US Business Central 26.1 (Platform 26.0.35091.0 + Application 26.1.33404.35168)