Sorry, for my late answer.
I cannot reproduce the problem with the file.
I assume you have Windows 10, right?
Do you use Russian localization of Windows?
Do you have the same problem on other machines?
Does the problem happen even when editing a local file (left panel)?
At work I have win8 (rus loc)
At home I have win10 (1803 version / rus loc)
Yes, i have same problem when editing a local file.
I checked yesterday at home from Russian localization, then deleted the program and all settings and installed the last English version, the problem remained.
I changed "Preference - Editors" from "internal editor" to "notepad" and the problem is gone