missing line / layers

Hello,
I having an issue where an layer eventually disapear the lines. It is not hidden. Then, if I edit the layer attribute, it shows again. But this solution is not effective everytime. Eventually it only hide part of the lines of that layer.
This is a common issue? It happens in 2 different computers that I use the same version of LibreCAD
I am using version 2.1.3.
Thnak you!

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