Problems like this are not caused by shrinkage but rather by sliding apart of pieces of flooring.
Why glue laminate flooring.
Also use glue in areas where spills and the presence of liquid are a high possibility like the kitchen or near the sink.
Glue is actually sometimes used on laminate planks but not to fix it to the sub floor but to attach the planks to one another by their tongue and groove members.
Glue down laminate flooring is generally thought of as higher quality than the floating floor variety.
This is usually done in areas that are prone to high moisture levels or areas that are exposed to water.
Laminate flooring offers speedy installation a tough surface and freedom from finishing fumes in your home but this stuff isn t completely foolproof.
Because your laminate is glued directly to the subfloor it makes it less likely for the planks to rise from moisture damage.
This gap between the ends of pieces of laminate flooring is being fixed with glue.
Glue down hardwood flooring often sounds more like real solid hardwood flooring than floating floors do.
Using glue for laminate flooring ensures your flooring remains durable.
Updated 1nov2019 video.
The glue can help strengthen the installation of the floor preventing it from being removed accidentally with use.