Created attachment 140608 [details]
Screengrab before modifying table structure
Steps to reproduce:
1. new table
2. fill in some text in more than one cell
3. use different font sizes, fonts, bold etc on parts of that text
4. add or remove cells
5. your previously done formating gets lost (mostly above the change in table structure that you just did, but not absolutely certain about that).
CPU-Threads: 2; BS: Linux 4.13; UI-Render: Standard; VCL: gtk2;
Gebietsschema: de-DE (de_DE.UTF-8); Calc: group
Created attachment 140609 [details]
screengrab after adding cells to the table
Sounds like a duplicate of bug 115573.
Already tracked by bug 115573.
Best regards. JBF
*** This bug has been marked as a duplicate of bug 115573 ***