Static text disappearing

I'm creating a sceen in Animate that has several different bits of text scattered in different places around the screen. It's a mockup of a website tool, to give you an idea. I had planned to put all text elements on one keyframe. None of them touch one another so that seemed reasonable. I made 3 or 4 static text boxes with no issues - was able to change size and color on each. However, when I tried to add the next one, it would LOOK like it was going to work, i.e., I could type my text and it looked normal - but when I clicked the move tool, the text was gone. I tried this several times with different combinations but always reached a place where I couldn't add a new static text element. I CAN create a new layer and put the text there, but I'm wondering about best practices. Just seems like if I need to add 15 bits of text, I shouldn't have to create 15 different layers. Am I missing something? Or is this a bug? Designed this way on purpose? There's no animation - I haven't tried turning any of the static text bits into symbols. Maybe that would help. Mostly just wondering what the best solution is for this kind of issue.