Bug 514158

Summary:	Scrolling and resizing the window sometimes makes some emojis fail to render
Product:	[Applications] Emoji Selector	Reporter:	Tobias Ozór <tobiasozor>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs-null>
Status:	CONFIRMED ---
Severity:	normal	CC:	cwo.kde, kdedev, marceloslacerda, nate
Priority:	NOR	Keywords:	regression
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	scrolling and resizing makes some emojis invisible

Description Tobias Ozór 2026-01-04 19:40:44 UTC

SUMMARY
Scrolling and resizing the window makes some emojis invisible

STEPS TO REPRODUCE
1. Scroll through the complete 'All' category
2. Resize the window
3. Repeat until some emojis get invisible

OBSERVED RESULT
Some emojis are invisible

EXPECTED RESULT
All emojis should still be visible

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 43
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1

Comment 1 Tobias Ozór 2026-01-04 19:46:43 UTC

Created attachment 188214 [details]
scrolling and resizing makes some emojis invisible

Comment 2 Marcelo Lacerda 2026-01-04 23:50:14 UTC

I can't seem to be able to reproduce.

My settings:

Operating System: Arch Linux 
KDE Plasma Version: 6.5.4
KDE Frameworks Version: 6.21.0
Qt Version: 6.10.1
Kernel Version: 6.18.3-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5600G with Radeon Graphics
Memory: 16 GiB of RAM (15.4 GiB usable)
Graphics Processor: NVIDIA GeForce RTX 4060
Manufacturer: ASUS

My attempt at reproducing the bug: https://drive.google.com/file/d/1BZ4Fg_qqOGlit-gbyUI9rjIxrnjfXbCW/view?usp=sharing

Comment 3 TraceyC 2026-01-05 20:25:26 UTC

I'm also not able to reproduce this in the Emoji Selector on Plasma built from git-master

Comment 4 Nate Graham 2026-01-06 22:57:52 UTC

I encountered this in https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/3389#note_1366700, while testing that merge request. However I couldn't reproduce it again, and this bug was reported against 6.5, not git master. So if others are intermittently encountering it too, maybe there's something here.

Regardless, I can't reproduce it anymore myself.

Comment 5 cwo 2026-01-06 23:16:03 UTC

I was just able to reproduce it with emojier from master, but it took a good number of attempts at scrolling and resizing, and only a few of them were gone, in relatively contiguous sections – some of the flags, and some people, seemingly unrelated to the missing ones I've seen in this video and Nate's screenshot from the MR.

I did see some errors in the log like

Jan 07 00:10:26 X260 plasma-emojier[47002]: Malformed linear gradient in COLRv1 graph. Points: QPointF(381,44) QPointF(381,44) QPointF(381,44)

I have no idea what this means and I'm pretty sure I've seen this before and it didn't cause any emoji to vanish then, so it's probably not related.