Rendering problem in secure Azure environment with IE

I am using prodigy within a secure Azure environment (no internet connection allowed) and puzzled by this behaviour:

I am using news_headlines.jsonl file for text classification. On the left (highlighted in red) you can actually see the original text, however it is not displayed properly in the main panel.

Do you have any ideas what may cause such behaviour? I can't fix it myself, but rather need to report to our IT admins and they should take care of it, but they are not experienced with Prodigy.

Any help will be highly appreciated!