[Gambas-bugtracker] Bug #2111: Move tabpanel tab, unknown symbol Tag

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.2111&from=L21haW4-

Bruce STEERS reported a new bug.

Summary
-------

Move tabpanel tab, unknown symbol Tag

Type             : Bug
Priority         : Medium
Gambas version   : Master
Product          : Development Environment


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

Moving a tab on a tabpanel gives error "Symbol Tag not found" and then crashes
FForm.MoveTab:3634


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

[System]
Gambas=3.15.90 ab70ef59a (bruces-patched)
OperatingSystem=Linux
Kernel=5.10.15-1-MANJARO
Architecture=x86_64
Distribution=Manjaro Linux
Desktop=MATE
Font=Sans,11
Scale=8
Theme=traditionalok
Language=en_GB.utf8
Memory=3822M

[Libraries]
Cairo=libcairo.so.2.11704.0
Curl=libcurl.so.4.7.0
DBus=libdbus-1.so.3.19.13
GDK2=libgdk-x11-2.0.so.0.2400.33
GDK3=libgdk-3.so.0.2404.20
GStreamer=libgstreamer-1.0.so.0.1803.0
GTK+2=libgtk-x11-2.0.so.0.2400.33
GTK+3=libgtk-3.so.0.2404.20
OpenGL=libGL.so.1.7.0
Poppler=libpoppler.so.107.0.0
QT5=libQt5Core.so.5.15.2
SDL=libSDL-1.2.so.0.11.4
SQLite=libsqlite3.so.0.8.6

[Environment]
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
DESKTOP_SESSION=mate
DISPLAY=:0
EDITOR=/usr/bin/nano
GB_GUI=gb.gtk3
GDMSESSION=mate
GDM_LANG=en_GB.utf8
GIO_LAUNCHED_DESKTOP_FILE_PID=77235
GTK2_RC_FILES=<home>/.gtkrc-2.0
GTK_MODULES=canberra-gtk-module
GTK_OVERLAY_SCROLLING=0
HOME=<home>
LANG=en_GB.utf8
LC_ADDRESS=en_GB.UTF-8
LC_ALL=en_GB.utf8
LC_IDENTIFICATION=en_GB.UTF-8
LC_MEASUREMENT=en_GB.UTF-8
LC_MONETARY=en_GB.UTF-8
LC_NAME=en_GB.UTF-8
LC_NUMERIC=en_GB.UTF-8
LC_PAPER=en_GB.UTF-8
LC_TELEPHONE=en_GB.UTF-8
LC_TIME=en_GB.UTF-8
LOGNAME=<user>
MAIL=/var/spool/mail/<user>
MATE_DESKTOP_SESSION_ID=this-is-deprecated
MOTD_SHOWN=pam
PATH=<home>/.local/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl
PWD=<home>
QT_AUTO_SCREEN_SCALE_FACTOR=0
QT_LOGGING_RULES=*.debug=false
QT_QPA_PLATFORMTHEME=qt5ct
QT_SCALE_FACTOR=1
SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/1143,unix/<hostname>:/tmp/.ICE-unix/1143
SHELL=/bin/bash
SHLVL=0
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
TZ=:/etc/localtime
USER=<user>
XAUTHORITY=<home>/.Xauthority
XDG_CURRENT_DESKTOP=MATE
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=mate
XDG_SESSION_ID=1
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
XDG_SESSION_TYPE=x11
XDG_VTNR=7