Pygobject memory leak in set_property?

[Colin Myers <colin myers tabernus com>]

Hello list,

I've been wrangling with a leak in my Pygobject/Gtk application and believe the following lines of python 
demonstrate the problem:


from gi.repository import Gtk
cell = Gtk.CellRendererText()
text = 'Hello world'
while True:
    cell.set_property('text', text)


No new python objects are allocated in the loop but top shows growing memory. Similarly I found this leaks:

label = Gtk.Label()
text = 'Hello world'
while True:
    label.set_property('label', text)


But this does not:

label = Gtk.Label()
text = 'Hello world'
while True:
    label.set_text(text)


I feel like I am missing something obvious, please help!


Regards,
Colin