CodeBlocks doesn’t start and uses CPU on Manjaro Linux

If I start codeblocks from the terminal, I get the following

[davide@localhost ~]$ codeblocks 
Starting Code::Blocks Release 16.01  rev 10692 Feb  1 2016, 10:34:12 - wx2.8.12 (Linux, unicode) - 64 bit
(codeblocks:6789): Gtk-WARNING **: Theme directory  of theme oxygen has no size field
Initialize EditColourSet .....
Initialize …
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