PEP8 weak warnings don't show up Follow

I'm putting about 5 or 6 new lines in my function. Before, there would be a yellow underline telling me that there are too many blank lines but now the warning doesnt show up. If I reformat code it will fix it but the underline never shows up. 

I checked my inspections and PEP 8 coding style violation is supposed to trigger a weak warning in all scopes.