How do you troubleshoot text callout not working?

Although I can get the Text Callout tool to appear on the pdf and can drag it around, when I try to type in/on it, it disappears. I tried selecting Text Callout, then selecting the push pin and that did not cause it to remain on the page. I got the same result: text callout bubble disappears when I try to type in it. So, I tried selecting "add text comment" ("T" icon) and wrote some text on my document. I then tried to form the Text Callout bubble around that, but that didn't work either.

Can anyone help me to write text in the text callout bubble?

I'm using a 2013 macbook air running osx 10.9.5 and Safari 9.0.3. Adobe reader DC.



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