SharePoint page layout for Modern and Classic pages are completely different and to not force one-size-fits-all approach, ShortPoint has divided Theme Builder into two different options starting from version 6.2.x.x.
Classic ShortPoint Theme Builder
This is same ShortPoint Theme Builder and works as expected for classic SharePoint pages only. You cannot use classic theme builder for Modern Pages.
Modern ShortPoint Theme Builder
This is the new option introduced to handle ShortPoint Theme for Modern SharePoint Pages only.
- Although we tried to make the User Experience and features as similar to ShortPoint Classic Theme Builder, you might see few differences in options in Modern Theme Builder.
- You cannot do common config for both theme builders, However you can Export Theme Builder customization from Classic and Import to your Modern Theme Builder or vise versa.