Joplin 1.3.18 (prod, win32)
Client ID: aea35034eb5b4628aed415bb03a7584b
Sync Version: 2
Profile Version: 34
Keychain Supported: Yes
Revision: 6b75485a1 (master)
Discription:
If I edit by Joplin Markdown editor it works well.
If I edit by extern editor
"\r" and "\n" repleased by the newline.
Should be fixed in latest pre-release
I updated to the latest, and got a new problem 
Description:
There is no fraction line when display markdown latex.
Version:
Joplin 1.4.12 (prod, win32)
Client ID: aea35034eb5b4628aed415bb03a7584b
Sync Version: 2
Profile Version: 34
Keychain Supported: Yes
Revision: 0f0c50a17 (master)
Screenshot:
In Joplin
In VSCode
I can't replicate that, for me it works. Is there anything custom in your app, like font or custom CSS?
thanks for rely, I reinstalled app and the problem fixed.
I haven't do any custom setting, I don't know what coused that 
I am having this problem, I tried to uninstall, delete all joplin's data from my computer (i.e deleting from programs file and appdata) and install it again, also I tried to use the portable version, but either way it doesn't works, I don't know why. I just want the fractions line.