I have set my "Maintain enough work for days broken" to 1 day in the web interface.
But the servers/computers decided that it should have 100 days... of work.

It doesn't matter what i fill in on the web GUI (0.1, 0.01, 2) it stays 100 days.
Using BOINC 7.14.2 x64

Update:
After fiddling a bit i know the issue.
The "Connect to network about every" is filled in the "Store at least x days of work." in the manager
And "Maintain enough work for an additional" fills the "Store up to an additional x days of work" in the manager

The field in the web gui is also presented as a % While it is rounded days?
So yeah maybe it not bug . But its just not very clear on the web gui...