crashes during video transcode with Gtk error using flatpak

[eyecreate]

Often, when converting videos, the GUI crashes, leaving the ffmpeg process running still. I was able to run it in the terminal once when this happened and got this message about a GTK error:

Gtk:ERROR:../gtk/gtkwidget.c:3900:gtk_widget_ensure_allocate_on_children: assertion failed: (!priv->resize_needed)

Not sure if this is an error based on aviator usage of gtk, the builds of certain libraries bundled with the flatpak, or bug in gtk itself.
Here's a link to the gtk 4.16.2 code near the line mentioned:
https://github.com/GNOME/gtk/blob/4.16.2/gtk/gtkwidget.c#L3909

[gianni-rosato]

I'm fairly confident this is a GTK issue, not an Aviator issue. I'll leave this open for visibility.