Enumerations objects are undefined in plugins with Qt 5.12.4

dmitrio95

• Jun 29, 2019 - 12:11

Reported version

3.2

Priority

P0 - Critical

Type

Functional

Frequency

Once

Severity

S2 - Critical

Reproducibility

Randomly

Status

closed

Regression

Workaround

Project

MuseScore

The issue is reproducible for me in my builds with Qt 5.12.4 but not in AppImages (that use Qt 5.9.3) so this may be related to Qt version. But this is seemingly reproducible not exactly always.

Steps to reproduce:
1) In Plugin Manager activate the "random" standard plugin.
2) (optional) restart MuseScore
3) Click Plugins→random in menu.

Result: empty score appears. Console says something like that:

unknown:unknown: QMetaProperty::read: Unable to handle unregistered datatype 'Ms::PluginAPI::Enum*' for property 'Ms::PluginAPI::PluginAPI_QML_88::Element'
file:///home/piton/p/musescore/build/musescore/share/mscore-pr-3.1/plugins/random.qml:unknown: file:///home/piton/p/musescore/build/musescore/share/mscore-pr-3.1/plugins/random.qml:38: TypeError: Cannot read property 'TIMESIG' of undefined