This might not be related to the T4 page builder but I don't know.
Look at this page HERE
I have installed a package which has a component, module and plugin. This is to display a calendar.
On my old site this is how the calendar is being displayed:
Now I used the T4-page builder - see layout below:
Below is what is being displayed:
The component / module configuration for the new site is the same as for my old site
Any suggestions much appreciated