Thank you for reporting this problem.
The visual display of the disk seems to consistently disappear when
enough operations have been added to the queue so that a scrollbar is
required (about 4 operations).
I have been able to prevent this from happening if I comment out the
following lines in HBoxOperations.cc::load_operations:
//make scrollwindow focus on the last operation in the list
if ( liststore_operations ->children() .size() > 0 )
treeview_operations .set_cursor( static_cast<Gtk::TreePath>(
static_cast<Gtk::TreeRow>(
*(--liststore_operations ->children()
.end()) ) ) ) ;
Currently in the git respository these can be seen at the following link:
http://git.gnome.org/browse/gparted/tree/src/HBoxOperations.cc#n76
Interestingly, if I change the "set_cursor" method to a "scroll_to_row"
method, then this problem does not occur for an additional 2 operations
(about 6 operations total).
The exact cause of this problem is still a mystery.
As a side note, a similar problem can occur when undoing many
operations.
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https://bugs.launchpad.net/bugs/583746
Title:
Partition graph disappears after a swap partition has been deleted
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