How do suds cause water leakage and the machine to breakdown?
Pour yourself a drink.   Use a fresh cold can of soda and a clear-sided glass. Now, watch the interface between foam and liquid.  

As the foam falls, the liquid line rises.   That's because foam is made of liquid. 

The reverse happens when you agitate soapy water.  Now the foam rises without limit, and reaches places it couldn't reach without foaming.  Once it is clear of the agitation, it settles back into soapy water.  It can do this unlimited, so it can pump a lot of water. 

So it's not leaking, it's migrating.  You are using too much soap (or poor soap).   

Detergent bottles are tricky these days.  They went to those goofy "scoops", which caused the caps to become very large.  Separately, they also made detergent much more concentrated.  The upshot is that caps are no longer sized for 1 load per cap.  You need to read the instructions and look at the very non-obvious graduation markings on the cap.  For instance the detergent I use, you use 1/6 to 1/3 of a cap.