The first version also has stud holes with slightly smaller diameter than the second one. Therefore bars sit very tight in studs.
Click on a colored part below to see the Sets and MOCs that use part 2654 Plate Round 2 x 2 with Rounded Bottom [Boat Stud] in that color. You can find an overview of all LEGO Colors here.
If a color is missing, it probably needs to be added to a Set Inventory.
This part has been used by MOCs in the following colors but not officially released.