Maybe not on the fresh water tanks, but, we have had a number of reports of trouble with galley, gray and worse yet, black water tanks.
The vendor of the black and gray tanks has stated that they are supposed to be installed with 2 straps, per, and as of last fall (Rally tour of plant), they were not done so.
Reports of black tank trouble is not recent, FlaNative had trouble several years ago and reported her fix was to put some braces under that tank, I believe she use something like 2 X 4's.
Concerns over this issue, no matter which tank it is, is why we seldom run with more than 6 to 10 gallons fresh and as little grey/galley/black as possible. We also try very hard to not let those tanks fill more than 2/3rd, if it is preventable.
We may be paranoid bout it, but we are also lazy and don't want to have to deal with consequences.