Text boxes not showing up in preview; seems to have grouped itself?

It looks like you  somehow added an animation with the effect option By Paragraph to this textbox. Check the Animations tab.

Thanks for looking into this. Unfortunately that's not it. There are no animations of any kind on the text box, both top level and the child level of this strange non-group-group.

Can you share your .story file (or one slide) here so that someone can have a closer look?

Heres one slide from my project... i've pasted in the problematic text boxes into a new storyline file...part of me wondered if it was a corruption in my original file but the issue remains here. 

Yeah, there is something weird going on with these textboxes. I would open a support case.

Ohh yikes, the more I try to edit this project, the more i'm losing to the mysterious issue! 

I've submitted a ticket. :( 

Aw, Sarah - I'm sorry to hear that you are still having difficulty and if you wanted to share your ticket number here, I'm happy to follow along as well.

Thanks, Ashley. This is a pretty troublesome issue I've got here!  
The ticket number is #00911689 but so far they were unable to solve the issue. In the meantime, I'm doing a scratch rebuild, and hoping this issue doesn't show up this time! 

Thanks Sarah and I did let Robert know that you also reached out here, and I'll continue to follow along in your case. I'm offsite the next few days, but Robert should be around and get back to you shortly! 

Hi Sarah,

I see that in your case with Robert he was able to determine the following:

We found a weird setup on the text that are not showing, they all appear to be in a group as the object can be expanded from the timeline. Unfortunately I was not able to find an option to remove it from that state. The issue is quite peculiar and we were unable to find any preference to fix the text with issues. However, there may still be a working version of your project in your temp files. Here's how to check: 

1) Open this folder in Windows Explorer: 

%appdata%\Articulate\Storyline 

2) Scan the contents of this folder for a file that starts with the name of your project. If you find one, copy it to your desktop. If you find more than one, copy the latest version to your desktop. 

3) Change the file extension of the copy on your desktop from *.tmp to *.story. 

4) Double-click the file to open it in Storyline. 

File corruption is unpredictable, and there's no straightforward way to determine what causes it. That is likely the reason if you continuously observe the same or other unexpected behavior. If there is a particular step causing the issue then kindly let us know so we can look into it further. If you are copying and pasting texts from an external file, kindly see if pasting the text without format or on Notepad first then from there to your project helps. 

Common causes of file corruption are environmental (disk errors, power outages, improper shutdowns), viruses, failed Windows updates, and even file size (i.e., very large files have a higher risk of corrupting). Consider using the preventative measures described in this article to protect your project files.

I wanted to share that here in the event that you didn't see Robert's response. Also, if you neeed additional help feel free to let Robert or I know.