Cursor shows blank page when scroll down a very long string

If I have a really long string in my code, when I scroll down, cursor can shows a blank screen, after I continue scrolling down, it can show the rest of the code, but I can never see the the end of the long string.
I am using the latest v0.43.5

By the way, I was trying to attach a screenshot, however, the system gives no response after I click the upload image icon. So I have to upload it to google drive and here is the screenshot:
https://drive.google.com/file/d/17W_p4uNYH81T1bz6dYeTOy_fUhrh-Xq2/view?usp=sharing