[Gambas-bugtracker] Bug #1984: After hiding Form and displaying it again, stacking property will be invalid.

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.1984&from=L21haW4-

梁炜 reported a new bug.

Summary
-------

After hiding Form and displaying it again, stacking property will be invalid.

Type             : Bug
Priority         : Medium
Gambas version   : 3.15
Product          : QT5 component


Description
-----------

Stacking property of Form been set to Above in design.
run form at above.
hide form.
show form again.
form can not to stay above. 
use code me.stacking=window.above. No effect.
gtk,gtk3,qt4 is correct.


System information
------------------

[System]
Gambas=3.15.3 70114aa (stable)
OperatingSystem=Linux
Kernel=4.19.0-11-amd64
Architecture=x86_64
Distribution=debian 10.6
Desktop=MATE
Theme=qt5ctproxy
Language=zh_CN.UTF-8
Memory=23960M

[Libraries]
Cairo=libcairo.so.2.11600.0
Curl=libcurl.so.4.5.0
DBus=libdbus-1.so.3.19.13
GDK2=libgdk-x11-2.0.so.0.2400.32
GDK3=libgdk-3.so.0.2404.1
GStreamer=libgstreamer-1.0.so.0.1404.0
GTK+2=libgtk-x11-2.0.so.0.2400.32
GTK+3=libgtk-3.so.0.2404.1
OpenGL=libGL.so.1.7.0
Poppler=libpoppler.so.82.0.0
QT4=libQtCore.so.4.8.7
QT5=libQt5Core.so.5.11.3
SDL=libSDL-1.2.so.0.11.4
SQLite=libsqlite3.so.0.8.6

[Environment]
CLUTTER_IM_MODULE=fcitx
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
DESKTOP_SESSION=lightdm-xsession
DISPLAY=:0
GB_GUI=gb.qt5
GDMSESSION=lightdm-xsession
GIO_LAUNCHED_DESKTOP_FILE_PID=24725
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
GTK_IM_MODULE=fcitx
GTK_MODULES=gail:atk-bridge
GTK_OVERLAY_SCROLLING=0
HOME=<home>
LANG=zh_CN.UTF-8
LANGUAGE=zh_CN.UTF-8
LC_ALL=zh_CN.UTF-8
LOGNAME=<user>
MATE_DESKTOP_SESSION_ID=this-is-deprecated
PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
PWD=<home>
QT4_IM_MODULE=fcitx
QT_ACCESSIBILITY=1
QT_AUTO_SCREEN_SCALE_FACTOR=0
QT_IM_MODULE=fcitx
QT_LOGGING_RULES=*.debug=false
QT_QPA_PLATFORMTHEME=qt5ct
QT_SCALE_FACTOR=1
SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/14135,unix/<hostname>:/tmp/.ICE-unix/14135
SHELL=/bin/bash
SSH_AGENT_PID=14176
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
TZ=:/etc/localtime
USER=<user>
XAUTHORITY=<home>/.Xauthority
XDG_CURRENT_DESKTOP=MATE
XDG_DATA_DIRS=/usr/share/mate:/usr/local/share/:/usr/share/
XDG_GREETER_DATA_DIR=/var/lib/lightdm/data/<user>
XDG_RUNTIME_DIR=/run/user/1000
XDG_SEAT=seat0
XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
XDG_SESSION_CLASS=user
XDG_SESSION_DESKTOP=lightdm-xsession
XDG_SESSION_ID=2
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
XDG_SESSION_TYPE=x11
XDG_VTNR=7
XMODIFIERS=@im=fcitx