Bug 568368 - Squiggly lines are rendered too narrow on Ubuntu 20.04.1
Summary: Squiggly lines are rendered too narrow on Ubuntu 20.04.1
Status: NEW
Alias: None
Product: Platform
Classification: Eclipse Project
Component: UI (show other bugs)
Version: 4.17   Edit
Hardware: PC Linux
: P3 normal (vote)
Target Milestone: ---   Edit
Assignee: Platform-UI-Inbox CLA
QA Contact:
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Reported: 2020-10-29 06:51 EDT by Jean-Baptiste Lievremont CLA
Modified: 2020-10-29 06:56 EDT (History)
0 users

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Attachments
Screenshot with Fira Code at 9px, highlight is on method name (67.15 KB, image/png)
2020-10-29 06:51 EDT, Jean-Baptiste Lievremont CLA 		no flags Details
Screenshot with Fira Code at 18px (125.83 KB, image/png)
2020-10-29 06:53 EDT, Jean-Baptiste Lievremont CLA 		mithfindel: review?
Details
Settings for the annotation, with squiggly lines style selected (40.40 KB, image/png)
2020-10-29 06:54 EDT, Jean-Baptiste Lievremont CLA 		mithfindel: review?
Details
Contents of the "Help" > "About" > "Installation Details" > "Configuration" tab (618.27 KB, text/plain)
2020-10-29 06:56 EDT, Jean-Baptiste Lievremont CLA 		mithfindel: review?
Details
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Description Jean-Baptiste Lievremont CLA 2020-10-29 06:51:49 EDT 
Created attachment 284597 [details]
Screenshot with Fira Code at 9px, highlight is on method name

After my upgrade to Ubuntu 20.04.1 LTS, I noticed that annotations that use the "squiggly line" style (`textStylePreferenceValue="SQUIGGLES"`) are rendered as a very thin line. If I double my text font size, I start to see the squiggles, but they are very narrow compared to the surrounding text (see screenshots).

I first noticed this in 4.17 (2020-09) and I also reproduce it in 4.7 (Oxygen).

The squiggles are rendered correctly on Windows 10 as well as Ubuntu 18.04.

My hypothesis is that the issue is caused by the switch to GTK 3 in recent versions of Ubuntu.
Comment 1 Jean-Baptiste Lievremont CLA 2020-10-29 06:53:02 EDT 
Created attachment 284598 [details]
Screenshot with Fira Code at 18px
Comment 2 Jean-Baptiste Lievremont CLA 2020-10-29 06:54:04 EDT 
Created attachment 284599 [details]
Settings for the annotation, with squiggly lines style selected
Comment 3 Jean-Baptiste Lievremont CLA 2020-10-29 06:56:07 EDT 
Created attachment 284600 [details]
Contents of the "Help" > "About" > "Installation Details" > "Configuration" tab