For an unknown reason, a table is unable to keep its formatting across save document and reopen.
It reverts to alignment: automatic, equal column (I set them to 3.5, 2, 1 and 10.5 cm respectively), no borders (instead of outer and inner lines) and padding:0 cm (instead of 0.1cm).
I have reformatted the table several times. I have even copied it from another document to no avail.
Could someone have a look at “Revision history” table in the attached document (file removed).
Version: 6.4.3.2
Build ID: 6.4.3.2-1.fc32
CPU threads: 4; OS: Linux 5.6; UI render: GL; VCL: kf5;
Locale: fr-FR (fr_FR.UTF-8); UI-Language: en-US
Calc: threaded
In case this matters: the document is rather special and TTF fonts are embedded.
PS: the same goes for the table in the header. It lost all its specific layout: all column equal, no border, merged cells unmerged.