Print String does not print to the viewport screen from the Construction Script, even if Print to Screen is enabled in the Print String node.
Reproduced in 4.7.6 binary, 4.9 Preview 3, and Main (//depot/UE4/Promotable-CL-2649225)
1. Open any project
2. Create a new Actor Blueprint
3. In the Construction Script, add a Print String
4. Drag the BP into the level
5. Move the BP Actor around the level
The Print String only prints to the Output Log and not the Viewport
The Print String prints to the Viewport while Print to Viewport is enabled (enabled by default)
Head over to the existing Questions & Answers thread and let us know what's up.