After upgrade from 8.6.16 to 8.8.1 this issue pops in for every path except frontpage.
There are other related issues (google_tag, splash_redirect) but here is not the case, something else is injecting it.
After an investigation it seems that $path from getAliasByPath() from AliasManager has the entire url and not only the path.
A small check can lean up the path.