[Zotero 7 Beta] Disappearing cursor around a math equation

mjthoraval

Steps to reproduce:
1) Type the following text in a new line: "$f(x) = x^2$" (without the "") [the content of the equation is not important.]
2) Press Enter to create an in line equation
3) Click at the end of the line:
https://s3.amazonaws.com/zotero.org/images/forums/u265723/bl0krkast6gqr1r9i7mu.png
4) Press the key Home on the keyboard
-> The cursor disappears:
https://s3.amazonaws.com/zotero.org/images/forums/u265723/9qwftp6rg8z5qrm8gsjk.png
Typing some text does not do anything, so I don't know where is the focus at that step.

Same from pressing End from the beginning of the line.

Note also that I cannot click on the beginning of the line: a click at the beginning will only trigger the edit mode of the math equation.

Or I cannot reach it by right arrow from the end of the previous line: it directly goes to the end of the math equation:
https://s3.amazonaws.com/zotero.org/images/forums/u265723/zzl9lx064z9nbz240d7p.png

All are working fine if there is some text before the equation.

Zotero 7.0.0-beta.74+2e8073ab9 (64-bit) in Troubleshooting Mode
Windows 10