I have T4 Page builder installed and I was trying to arrange some pages with it.
The layout seems not so WYSIWYG. Some images was overlap with text. And some imags didn't show.
UPDATE: The T4 page builder layouts display properly when I change template from JA Healthcare to Joomla default Cassiopeia. So there are css conflictions. Please help.
You're right, the template uses old Bootstrap version, you need to enable Legacy option in T4 Builder options:
I updated for you and it's ok now.