It's possible to avoid creation of the bubbles in the first place though. Some tanks could use pistons, and some - flexible membranes between displacing gas and

It's possible to avoid creation of the bubbles in the first place though. Some tanks could use pistons, and some - flexible membranes between displacing gas and the liquid fuel. Or tanks could be flexible themselves, squeezing the fuel out when their volume decreases and when being fueled, increasing their volume. If bubbles appear, it's possible to liquify them back. Increase of pressure with possible decrease in temperature (active cooling) could help. This is an old problem, with quite a few ideas how to solve, some of those ideas even tried in practice.