Steps to reproduce:
Open the dictionary, the font is huge.
Then look at font sizes, and 15 is selected, now change to 30, for example, and confirm (it became event bigger).
Then change it back to 15, confirm and now it was fine.
One has to do it every time.
Version: 2018-12-26_18-59_2.0.1_0d1b2fc
Hello, this has been fixed in the latest version and you do not need to select the font size and confirm it all the time since it will remember you choice.
Hi Claire 
In which version? Is it to be released?
In version 2.1.1. But this update has been temporarily suspended and we are currently developing a fix for these issues. The fix will be announced on our official website and social media once it is available. Apologies for any inconvenience caused and appreciate your understanding.
Np, nice to know, thanks for your answer.