Text can normally be rotated either 90 or 270 degrees through the Character > Position dialog box. This works even in tables, but only if the table’s text direction is set to Left-to-right. If the table’s text direction is set to Right-to-left through the Table properties dialog, no rotation takes effect. See the screenshot of a document, where there are two identical tables, one marked as LTR and the other as RTL. Text is rotated as expected in the LTR table, while nothing seems to happen in the other one.
This bug was first reported on Launchpad for LO 126.96.36.199 on Ubuntu 17.10 at: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1772445 . After my initial report, I have upgraded to LO 188.8.131.52 and can still reproduce the problem. Another user on Launchpad confirmed the bug on LO 184.108.40.206 and 220.127.116.11, as well.
Steps to Reproduce:
1. In Writer, create a table and write some text in it.
2. Select the text and rotate it by 90 degrees through the Character > Position dialog box.
3. Change the directionality of the table to Right-to-Left through the Table properties dialog.
The text becomes horizontal, as it was before rotation.
The text should be rotated by 90 degrees, as happens in a Left-to-Right table.
User Profile Reset: No
Created attachment 144551 [details]
Screenshot of a LTR and a RTL table which both have rotated text
Created attachment 144552 [details]
ODT document used to create the screenshot
Version: 18.104.22.168.alpha0+ (x64)
Build ID: 3208fcb3a36d75d6290d9c548430682f153b09db
CPU threads: 4; OS: Windows 10.0; UI render: default;
TinderBox: Win-x86_64@42, Branch:master, Time: 2018-09-20_22:43:20
Locale: fi-FI (fi_FI); Calc: threaded
Arch Linux 64-bit
Build ID: 8b1501d80dc9d3f42c351c6e026fa737e116cae5
CPU threads: 8; OS: Linux 4.18; UI render: default; VCL: gtk3_kde5;
Locale: fi-FI (fi_FI.UTF-8); Calc: threaded
Built on 23 September 2018
Arch Linux 64-bit