Text box lines not appearing when pasted into Brightspace

Hi all. I frequently use the text box feature inside Brightspace. Now, I use TextBlaze to insert a textbox with everything I need set up instead of making a new one on Brightspace each time. However, I have learned that the lines in the textbox, when shortcutted in, appear invisible to students. For example, I have a TextBlaze shortcut with a textbox of quiz feedback for the gradebook. It will set up the textbox order but not include the actual lines. Below is an example.

This is how it should look:

Here is an example of how it appears on one of my students' end in gradebook:

Any thoughts about what is going on and how I can get the lines to appear? The convenience of having each textbox set up already is essential to me. But I did not realize it would not transfer on the student's end.