OS version: Windows 10 22H2
App version: 9.0.4.50 (x64 exe)
Downloaded from: Downloaded online installer from OnlyOffice website.
Within a text formatted cell, I place a “-” at the beginning. Then when I leave the cell(either by using ENTER and by clicking off), an “=” appears before the “-”.
I have used the installer to repair the install. I have also uninstalled and reinstalled OnlyOffice. These things did not change this behavior.
Hey @Cynemund, 
To help us understand and reproduce it better, could you share a short video showing the behavior? Just include the steps of typing the dash in a text-formatted cell, leaving the cell (via Enter or clicking off), and the resulting “= -”.
You can upload the video to an external storage service and share the link here. This will really help us nail down what’s going on!
That is not exactly what I meant. I put text after the “-”, and then it is treated as a minus sign. Just “-” works.
Like this.