I'm unsure if this is a bug or not however when mining and you get the message/DC against Fort against fatigue, it states a time in minutes to fully recover. Yet even when you've rested the alloted time in real time, as soon as you go back to mining you're immediately hit with the DC fatigue rolls again which makes it confusing and also detracts a bit from the game. Even resting won't remove the checks. Also, the time alloted to recover corresponds to your con score. This seems to be a bit weird in that if you had a hiher con, surely that would indicate a higher level of stamina/fitness/robustness and thus recovery time should be faster not slower the greater your con is? The lower con score should recover very much slower as they are not as healthy/fit etc. I understand that these checks where put in place to stop "spam" mining but could something be done to fix the resting checks please?

The time it takes to become fatigued is offset by constitution. I won't say anything else about this mildly complex system other than it's working as intended, but the wrong values are being displayed.