Pathfinder 2-hand/off-hand damage not calculating correctly

Hello, I have been running into a problem ever since I updated to 3.7.5 and now I am finally asking for help with it.

I am running a campaign using the Pathfinder rules. What should happen with most attacks is if they are 1-handed the characters strength modifier is added to the damage, if it is 2-handed then 1.5 x Str should be added, and off-handed attacks should get 0.5 x Str.

What is happening instead is that no matter what I set an attack to it adds 1 x Str to the damage.

I have poked through the various options trying to see if there was some box I needed to check, and I have created fresh Pathfinder campaigns and created new characters with to see if that would fix the issue.

As it says in the .log, I am using Windows 10, the Pathfinder ruleset, and D20Pro 3.7.5.

Thank you very much for whatever help or advice you can provide.