I just noticed that at mine depth 105 the material population percentages add up to more than 145%. ~53% clay ~20% stone and 11%-14% each for the other 6 materials. It really doesn't add up.
When I reclaimed it gave me back 44 of the 50 diamonds I used to gild hobbies. Then I refreshed the page and I only had 8 diamonds and no gilding. So basically I lost 50 diamonds of gilding. Goodbye two weeks of progress.