Cell Alignment Option Disappeared

First, off – I really like your plug-in!!

Are there any known conflicts with other plug-ins? I ask as, one of my WP installs running WP Table Builder, the align options for aligning the text within a text cell has disappeared. The option was visible yesterday, but has now disappeared in the menu for text options (Bold, underline, etc.).

I have a screenshot that I’m happy to include if I could figure out how to inlcude it in this post.