Compile Warning for Local TMap Variables

When using TMaps within a function in blueprints & then compiling the blueprint causes a warning to be created in the output log. In some test cases it only occurs with a local function TMap variable; however, in the test project provided, the warning can be shown with a blueprint TMap variable.

The error that is being shown is:
LogScriptSerialization:Warning: Error: Unknown bytecode 0x3C; ignoring it

I have also provided a screenshot of the warning

Regression:
This issue does not occur in versions before 4.15 because TMaps were introduced in 4.15

1. Open TestProject Provided
2. Open Actor_BP
3. Open the Output Log
4. In Actor_BP Open the Tick Function
5. Compile the blueprint
   Result: Output log shows a compile warning for the TMap
   Expected Result: Output should show no compile warning