In the attached screenshot, I’ve written an English sentence with an Arabic word in the middle on the first row of a Calc sheet. On the second row, I’ve written the same Arabic word (العربية) by itself. The second row looks as it should but on the first row, some of the characters overlap. The same problem occurs if I surround the isolated Arabic word with parentheses, in which case the cell is automatically aligned to the left. I’m using the default font settings, which in my environment are Liberation Sans for Latin text and DejaVu Sans for Arabic. The problem only occurs in Calc, not Writer.
This problem was first reported for LO 188.8.131.52 on Launchpad at https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1793127 . Another user there confirmed the bug for LO 184.108.40.206 and 220.127.116.11.
Steps to Reproduce:
1. In a LTR Calc cell, write some text in English, then Arabic and then English.
Some of the letters of the Arabic text overlap.
Arabic should look the same as in an RTL context.
User Profile Reset: No
Created attachment 144988 [details]
Screenshot of an Arabic RTL inset in the middle of LTR text
Did some testing and looks like it appeared with the HarfBuzz implementation in 5.3.
Can you also reproduce with 6.1.x or master ?
(In reply to Lior Kaplan from comment #3)
> Can you also reproduce with 6.1.x or master ?
Original report was for 6.1.1. I confirm with master
Arch Linux 64-bit
Build ID: b752a93acff31c824bcec4233a8dd9bee014ca7d
CPU threads: 8; OS: Linux 4.18; UI render: default; VCL: gtk3_kde5;
Locale: fi-FI (fi_FI.UTF-8); Calc: threaded
Built on 12 October 2018
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I tested this again with LO 18.104.22.168 installed on Ubuntu as a snap. Now font metrics are still mixed up in the main view while I am typing and permanently on the formula line. When I finish typing and press Enter, the main display shows the characters correctly. So part of the problem is fixed, part is remaining.
Build ID: libreoffice-22.214.171.124-snap1
CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3;
Locale: fi-FI (fi_FI.UTF-8); UI-Language: en-US
Created attachment 155033 [details]
Screenshot on LO 126.96.36.199
The first line in the main view looks correct; the second line, which I'm still typing at the moment of this screenshot, is incorrect. The formula line is incorrect, too.