It's common anywhere you have two supports separated by a vertical section of pipe, thanks to thermal effects and gravity in direct opposition. This can be mitigated if desired/required by pushing the supports away from each other, or by trying to model actual flexibilities through steel modeling.

I would caution against trying to buck this trend, and rather invoke B31.3 319.4.1(a) or (b), when possible.

Note that those supports are often there for when bolts are removed, and not necessarily for the sake of stress.