Bug 427901

Summary:	Clicking on "Update" displays empty view
Product:	[Applications] Discover	Reporter:	Bernie Innocenti <bernie>
Component:	discover	Assignee:	Dan Leinir Turthra Jensen <leinir>
Status:	RESOLVED FIXED
Severity:	normal	CC:	aleixpol, nate, rdieter
Priority:	NOR
Version First Reported In:	5.20.0
Target Milestone:	---
Platform:	Other
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	screenshot

Description Bernie Innocenti 2020-10-18 02:26:36 UTC

Created attachment 132508 [details]
screenshot

See attached screenshot. Discover found 10 updates, but can't display the update window.

Not sure how to reproduce. I opened Discover and searched for "eventcalendar", then "event calendar", clicking on the categories on the left. Then I noticed the bug. 

The log contains these errors:

file:///usr/lib64/qt5/qml/org/kde/kirigami.2/templates/AbstractApplicationHeader.qml:102:9: QML Connections: Implicitly defined onFoo properties in Connections are deprecated. Use this syntax instead: function onFoo(<arguments>) { ... }
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/ActionToolBar.qml:141:21: QML PrivateActionToolButton: Binding loop detected for property "checkable"
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/ActionToolBar.qml:121:23: QML PrivateActionToolButton: Binding loop detected for property "checkable"
qrc:/qml/ApplicationsListPage.qml:125: TypeError: Cannot read property 'application' of null
QQmlComponent: Component is not ready
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/PageRow.qml:570: Error: Error while loading page: qrc:/qml/UpdatesPage.qml:172 Invalid property assignment: "implicitHeight" is a read-only property


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.20.0
KDE Plasma Version: 5.20.0
KDE Frameworks Version: 5.74.0 
Qt Version: 5.15.1

These are the packages in the plasma-unstable COPR for Fedora: https://copr.fedorainfracloud.org/coprs/mkyral/

Comment 1 Bernie Innocenti 2020-10-18 02:27:46 UTC

Ok, it's actually reproducible every time. No need to click around.

Comment 2 Nate Graham 2020-10-21 03:27:15 UTC

QQmlComponent: Component is not ready
file:///usr/lib64/qt5/qml/org/kde/kirigami.2/PageRow.qml:570: Error: Error while loading page: qrc:/qml/UpdatesPage.qml:172 Invalid property assignment: "implicitHeight" is a read-only property

That doesn't make any sense. It's *not* a read-only property.

Oh. Oh. I see. You're using Frameworks 5.74 which had a bug in it relating to icon sizing which could cause this.

The good news is that this is fixed in Frameworks 5.75 which is already released.

Comment 3 Bernie Innocenti 2020-10-27 14:29:35 UTC

> The good news is that this is fixed in Frameworks 5.75 which is already released.

That's right. Updated to KDE Frameworks 5.75 from the Fedora COPR repo kf5-unstable, and now the bug is fixed.