I have read in the following duplicate thread that the problem is due because synaptic calls gtk_tree_view_set_model of gtk-3. https://bugs.launchpad.net/ubuntu/+source/onboard/+bug/1264315
This probably also explains why the problem does not occur in synaptic 0.75: it still uses gtk2.
I have read in the following duplicate thread that the problem is due because synaptic calls gtk_tree_ view_set_ model of gtk-3. /bugs.launchpad .net/ubuntu/ +source/ onboard/ +bug/1264315
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This probably also explains why the problem does not occur in synaptic 0.75: it still uses gtk2.