A double-check list:
- text is Visible
- text is not fully transparent
- no funky business in Init / (Pre)Construct
- search for the Text Block references in all blueprints (the binoculars) and see if another blueprint fiddles with it
If the abovementioned sanity check is satisfactory, use the Widget Reflector and see what is happening to the misbehaving Text Block:
A crash course on Reflector:
