Exp Skills - "LuckyDetour" & "OffbeatRoads" do not increase

[IzzyKiddnya]

Re:
Lucky Detour Explorer Skill
and
Offbeat Roads Explorer Skill

Raising skill level results in

ZERO chance of finding Granite and Titanium, respectively

This CAN'T be right, can it?

Some kind of bug? or did I fail to read some instructions "somewhere"?

Possible BUG already reported

[Spikescopilot]

It's a display bug in the tool tip. The skills do still work.