3.6.8 Stable

Hi everyone
Closing fitsviewer when EKOS is open crashes kstars. Reproducible with both physical hardware and the simulators.
To reproduce:
open EKOS and connect a profile
open or capture a fits image
close fitsviewer from the File menu
---> crash

Not urgent. OK if you know it's going to happen!
Cheers

log attached to this post.

bt:
Thread 1 "kstars" received signal SIGABRT, Aborted.
__pthread_kill_implementation (no_tid=0, signo=6, threadid=140737212292224) at ./nptl/pthread_kill.c:44
44 ./nptl/pthread_kill.c: No such file or directory.
(gdb) bt
#0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=140737212292224) at ./nptl/pthread_kill.c:44
#1 __pthread_kill_internal (signo=6, threadid=140737212292224) at ./nptl/pthread_kill.c:78
#2 __GI___pthread_kill (threadid=140737212292224, signo=signo@entry=6) at ./nptl/pthread_kill.c:89
#3 0x00007ffff4042476 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#4 0x00007ffff40287f3 in __GI_abort () at ./stdlib/abort.c:79
#5 0x00007ffff4089676 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7ffff41dbb77 "%s\n")
at ../sysdeps/posix/libc_fatal.c:155
#6 0x00007ffff40a0cfc in malloc_printerr (
str=str@entry=0x7ffff41deb08 "malloc(): unaligned fastbin chunk detected") at ./malloc/malloc.c:5664
#7 0x00007ffff40a435c in _int_malloc (av=av@entry=0x7ffff4219c80 , bytes=bytes@entry=16)
at ./malloc/malloc.c:3853
#8 0x00007ffff40a5139 in __GI___libc_malloc (bytes=16) at ./malloc/malloc.c:3329
#9 0x00007ffff2a30426 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#10 0x00007ffff2a30a09 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#11 0x00007ffff2a30eb1 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#12 0x00007ffff2a31e45 in xcb_wait_for_reply () from /lib/x86_64-linux-gnu/libxcb.so.1
#13 0x00007fffeeedb608 in QXcbScreen::topLevelAt(QPoint const&) const ()
from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#14 0x00007ffff5135e31 in QGuiApplication::topLevelAt(QPoint const&) ()
from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#15 0x00007ffff596b21d in QApplication::topLevelAt(QPoint const&) ()
from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007ffff596bc5a in QApplication::widgetAt(QPoint const&) ()
from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007ffff5973448 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007ffff59c9843 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007ffff59cbfd5 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007ffff596c713 in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007ffff4cb9e3a in QCoreApplication::notifyInternal2(QObject*, QEvent*) ()
--Type <RET> for more, q to quit, c to continue without paging--
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007ffff5141307 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#23 0x00007ffff5116a2c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#24 0x00007fffeeef8d6e in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#25 0x00007ffff3ed9d3b in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007ffff3f2f258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007ffff3ed73e3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007ffff4d130b8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007ffff4cb875b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007ffff4cc0cf4 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00005555556ff90a in main (argc=<optimized out>, argv=<optimized out>) at ./kstars/main.cpp:386
(gdb)

It should be fixed now.
Hy