As explained in summary. In distrubuted environments the host groups dropdown menu's seem broken. Following query is performed from out the function get_viewed_groups

Following lines trigger the problem
851 if(ZBX_DISTRIBUTED)

{ 852 $def_sql['select'][] = 'n.name'; 853 $def_sql['from'][] = 'nodes n'; 854 $def_sql['where'][] = 'n.nodeid='.DBid2nodeid('g.groupid'); 855 $def_sql['order'][] = 'n.name'; 856 }

As the hostgroup isretrieved as g.name and node names as n.name following happends when you get the result back from mysql:

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As you can see the first column name is automatically overwriten by the second name

I was able to fix it for now with changing the line to

852 $def_sql['select'][] = 'n.name as nodename';