Please see the layout in attached document containing one block consisting of text objects, lines and hatches. All the geometry is placed within the layout.
When I zoom to extents or to the selected block, something seemingly outside of the object bounds takes over and the viewport zooms out to who knows what. This is the result:
So do you think it might be font related? Still, there is something up with the blocks - I can recreate the block anew and it will conjure something up inside the block that is far away from the actual geometry