Object Clutter.Clone (0x562c854f26b0), has been already finalized. Impossible to get any property from it.
With the Debian Sid/unstable package gnome-shell 3.27.92-2, the stack trace below is in the journal.
Mar 14 23:49:57 xps139370 gnome-shell[763]: Object Clutter.Clone (0x562c854f26b0), has been already finalized. Impossible to get any property from it.
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: == Stack trace for context 0x562c83f88000 ==
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #0 0x562c8429e828 i resource:///org/gnome/shell/ui/tweener.js:73 (0x7fdbd35deef0 @ 9)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #1 0x562c8429e7a8 i resource:///org/gnome/shell/ui/tweener.js:105 (0x7fdbd35e0230 @ 36)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #2 0x562c8429e720 i resource:///org/gnome/shell/ui/tweener.js:92 (0x7fdbd35e0098 @ 52)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #3 0x7ffdb08291f0 I resource:///org/gnome/gjs/modules/tweener/tweener.js:203 (0x7fdbd35e9cd0 @ 54)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #4 0x7ffdb0829340 b resource:///org/gnome/gjs/modules/tweener/tweener.js:332 (0x7fdbd35e9d58 @ 1626)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #5 0x7ffdb08293f0 b resource:///org/gnome/gjs/modules/tweener/tweener.js:345 (0x7fdbd35e9de0 @ 100)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #6 0x7ffdb0829480 b resource:///org/gnome/gjs/modules/tweener/tweener.js:360 (0x7fdbd35e9e68 @ 10)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #7 0x7ffdb0829570 b resource:///org/gnome/gjs/modules/signals.js:126 (0x7fdbd35e2b38 @ 386)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #8 0x7ffdb0829620 b resource:///org/gnome/shell/ui/tweener.js:207 (0x7fdbd35e0808 @ 159)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #9 0x7ffdb0829680 I resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7fdbd35c2bc0 @ 71)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #10 0x7ffdb0829720 b resource:///org/gnome/shell/ui/tweener.js:182 (0x7fdbd35e0780 @ 15)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: == Stack trace for context 0x562c83f88000 ==
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #0 0x562c8429e828 i resource:///org/gnome/shell/ui/tweener.js:80 (0x7fdbd35deef0 @ 82)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #1 0x562c8429e7a8 i resource:///org/gnome/shell/ui/tweener.js:105 (0x7fdbd35e0230 @ 36)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #2 0x562c8429e720 i resource:///org/gnome/shell/ui/tweener.js:92 (0x7fdbd35e0098 @ 52)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #3 0x7ffdb08291f0 I resource:///org/gnome/gjs/modules/tweener/tweener.js:203 (0x7fdbd35e9cd0 @ 54)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #4 0x7ffdb0829340 b resource:///org/gnome/gjs/modules/tweener/tweener.js:332 (0x7fdbd35e9d58 @ 1626)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #5 0x7ffdb08293f0 b resource:///org/gnome/gjs/modules/tweener/tweener.js:345 (0x7fdbd35e9de0 @ 100)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #6 0x7ffdb0829480 b resource:///org/gnome/gjs/modules/tweener/tweener.js:360 (0x7fdbd35e9e68 @ 10)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #7 0x7ffdb0829570 b resource:///org/gnome/gjs/modules/signals.js:126 (0x7fdbd35e2b38 @ 386)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #8 0x7ffdb0829620 b resource:///org/gnome/shell/ui/tweener.js:207 (0x7fdbd35e0808 @ 159)
Mar 14 23:49:57 xps139370 gnome-shell[763]: Object Clutter.Clone (0x562c854f26b0), has been already finalized. Impossible to set any property to it.
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #9 0x7ffdb0829680 I resource:///org/gnome/gjs/modules/_legacy.js:82 (0x7fdbd35c2bc0 @ 71)
Mar 14 23:49:57 xps139370 org.gnome.Shell.desktop[763]: #10 0x7ffdb0829720 b resource:///org/gnome/shell/ui/tweener.js:182 (0x7fdbd35e0780 @ 15)