Of course. Many pundits predicted this would happen because of Biden's idiotic 'solution'.
The problem at California's docks is that there aren't enough trucks and drivers to pick up the unloaded shipping containers. Unloading even more of them simply increases the congestion of containers at the docks which further increases the waiting time for not only the ships, but also the trucks.
The main reason for truck and driver shortages is California's idiotic rules that won't allow any trucks on the roads older than three years of age. That's because California has exhaust emission rules that started three years ago that outlawed older trucks. It's too expensive for private owner-operators to retrofit their truck, so they simply avoid California. Now about the only trucks there have (unionized) drivers from large fleet owners, so there's a shortage that cannot be solved by any Democrat.
The real problem at the CA ports is that the different players in the marine shipping supply chain — ocean carriers, terminals, drayage trucks, shippers/receivers, chassis yards, etc. — are involved in a finely tuned process that has completely broken down mainly because of two factors: (1) a huge imbalance of trade that results in large numbers of empty containers with nowhere to go, and (2) insufficient availability of container chassis for the drayage trucks to use.
Item (2) is what is fouling up the trucking process. Some of these drivers must wait for hours at a terminal gate just because they can’t get a chassis, and when you’re paid by the load it’s not even worth showing up for work if you are going to get a single load out of a full day’s work.