When we were looking at used campers at a dealership here in MN this spring, I noticed the same thing right in the middle of the kitchen of one of their used campers - a 3 foot long split! I asked what happened here? He said they had about 10 campers with the same issue...all older linoleum and it happens with the extreme cold. And we had plenty of that. The stuff shrinks with the cold and something's got to give...and boy does it give!
1988 Saturn T-1550 (sold 6/10)
2004 Solaris T-1950 (sold 5/14)
2007 Solaris T-276SR (sold 3/20)
2020 Forest River - No Boundaries 19.8
2013 Toyota Tundra Crewmax