Well, since the Tessera is a box mod, I'm pretty sure that is not your problem.
Did you get it as the standard kit? If so, you would have an Ello TS sub ohm tank on it.
Remove the coil, wipe it and the inside base off. Make sure your o-rings are in place and/or not damaged. Put the coil back in, ensuring it is lined up properly and hand tight only. Put the rest of the tank together (checking all other o-rings) and put it back on the mod. Fill the tank back up, reduce your wattage and vape.
If it is still spitting some, blow into the drip tip, wipe the outside of the tank and try again.
If it is still giving you issues after that, try replacing the coil with a new one, putting 2 drops of eliquid into the center of the coil, and one drop on each of the outside "vents" of the coil.
The cotton used on most eleaf coils is the paper thin type folded many times. Can be a pain to soak up eliquid at times or just simply over saturates the coil at others.