Verifying LibreOffice after each restart?

• https://bugs.documentfoundation.org/show_bug.cgi?id=126409

It is a bug filed on LibreOffice's tracker. So they're aware of it. Please do not flood the tracker with "me too" comments.

You still seem to start LibreOffice from the DMG file it was delivered in. Just drag the LibreOffice icon into your /Applications folder to install it properly. You can then eject and delete the DMG file.

It appears you do not have the app installed on your computer, and hence the app config is missing, causing macOS to ask you to verify with every restart.

You should consider installing it as mentioned in @nohillside's answer, by dragging to copy the LibreOffice.app into the /Applications directory.

Alternatively, you can also install the app using Homebrew. If you already use Homebrew, you can simply run the following command-line in Terminal.app to install the app:

brew cask install libreoffice

If you do not have Homebrew installed, you can follow the installation instructions on Homebrew website to install it before running the above command.