I’m working since lot or years with LO and this is a fantastic product.
Some day ago I updated to the new Version V4.2.3.
No I saw that all bordersline with tables (for example within .odt files) are disappeared.
Open the file on an other computer with the old Version V 4.1.4 shows the border lines.
I think this is an error within the Version V4.2.3. Update???