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Details

Type: Bug
Resolution: Done
Priority: P3: Somewhat important
Fix Version/s: 5.15.7, 6.2.0 Beta4, 6.3.0 Alpha
Affects Version/s: 5.9.6, 5.12.4, 5.15.5
Component/s: GUI: Font handling
Labels:
- Reported_by_support_premium

Platform/s:

macOS, QNX, Windows
Epic Link:
macOS: Text/fonts
Commits:
43a63901f4eb61ad8a29f4cc7a1700685f88ec35 (qt/qtbase/dev) 432acc2794be4bb3fa98c7319b7824bf2fec44d4 (qt/qtbase/6.2) 6a2b565b5bed2616a4f5b7a14931e09594f4670b (qt/qtbase/6.1) 41fabc9b2729f401a4a2953870d5f4753ad064f0 (qt/tqtc-qtbase/5.15)

Description

Symptom

Garbled character is displayed when switching Arabic to another language. I attached sample program (source code) that reproduces the problem.Garbled character is displayed when switching Arabic to another language. I attached sample program (source code : ArabicFontChangeSample.zip) that reproduces the problem.

Steps to Reproduce

Launch the sample program
Click a button labeled "Arabic"
Click a button labeled "Japanese"
Garbled characters are displayed

Notes

This symptom happens when selecting Arabic first then switch to another language. If Japanese or English is selected first, this symptom never happens.
This symptom only happens when “NoFontMerging” is specified as QFont::StyleStrategy option. "NoFontMerging" is specified in main.cpp.