The == node is no longer available for Strings.
Reproduced in 4.8.0 and Main (The == node is no longer available for Strings). This is a regression: the == node for strings existed in 4.7.6
1. Open any project
2. Open any Blueprint
3. Create a String variable
4. Drop the String variable in the Event Graph
5. Drag off the String variable and search for "=="
No == node is available for Strings, whether Context Sensitive is enabled or not. The node does not appear in the Pallete, either.
Head over to the existingAnswerHub thread and let us know what's up.