I have created many different custom parts (following the same port connection conventions as standard Plant 3D olets) that fit well under Olets category due to their perpendicular/branching connection to the mainline (custom pipe saddles, pipeline pigging indicators, purge & verification fittings, small bore 3-way tees, etc). However, for any olets that have been created using custom block-based graphics, once implemented, the software will throw a random and generic looking branch when attempting to attach the part to pipe; when grabbing the part out of the palette it looks fine, but as soon as it latches onto the pipe you're looking to connect to (but before clicking to finalize the connection), it throws the generic looking branch (looks like an inline tee almost), and the custom part never comes back / recovers. Attaching one such example (.png and .mp4 file).
