r13075 of 1.8

most likely not any templated graph, but only existing ones that have been created with incorrect configuration.
saving & reopening the graph should get rid of that error - is that the case ? if so, probably not much to fix here, except...

maybe a db patch should be provided that detects working time & trigger showing values > 1, and swaps them with percentile values ?

something like select * from graphs where show_triggers>'1' or show_work_period>'1'; should reveal any graphs with bogus config

Yes, saving and reopening a graph removes the error.

we know what caused this, but it doesn't seem to affect a large portion of users. might be ok to close as wontfix

I am closing it as suggested.