"Normal or acceptable?" For who? For RTW or some less-than-"mindful" makers? Perhaps "yes."
It is not acceptable in my mind, however. IMO, the toe has not been lasted properly nor properly "wiped." The "pipes" were never cleared.
There are methods...even methods adaptable to high production facilities...that can prevent or at least ameliorate this. And for bespoke work, it should be anathema.
The only time it is "understandable" / excusable (maybe) is on very narrow toes where alligator or sometimes heavy lizard is being lasted. In such cases the tiles are so dense and hard that the pipes cannot be moved.
In my professional opinion...