Collapsed brake booster hose issue. Is this common?

[Bimmernut2]

I just noticed the brake vacuum hose that runs from the booster to the DISA looks collapsed. It appears to be about a $25-$30 hose. Is this a common issue? I still have good brake assist but am wondering if others have seen or had this problem.

[Hermes]

I've already changed mine

[zj96sc]

Mine is collapsed. Pretty common.

I ordered a new one with the first batch of probably $800 in parts....at some point got lost in the shuffle. Haven't ordered another; brakes work fine.