Hi,
I managed to solve this issue.
Go to Settings > Display:
On the 'Make Text Bigger' section, take the indicator all the way to the left. The pop up screen should finally show the whole content.
Slowly increase the indicator to the right until the Text is big enough for you to read comfortably. However, if it reverts back to the same problem when you increase the text size, you'll just have to reduce it.
Hope this makes sense :)