I also met the problem in version4.2, I change the file /home/{login user}/.gconf/apps/guake/general/%gconf.xml <entry name="window_height" mtime="1385689978" type="int" value="50"/> when in problem, its value is 105,and I change it to 50. it is ok.
I also met the problem in version4.2, gconf/apps/ guake/general/ %gconf. xml height" mtime="1385689978" type="int" value="50"/>
I change the file /home/{login user}/.
<entry name="window_
when in problem, its value is 105,and I change it to 50. it is ok.