Sorry for the late reply, I recently changed internet service provider and it has taken longer than anticipated to set up.
After completing your solution I opened the level through the content browser, and then proceeded to make some blueprint changes. Clicked save all, and exited the project.
For the second time, I loaded up the project directly through the launcher and opened the level through the content browser, It immediately had the issue.
FYI, the only blueprint i changed was the character bp