Problem simulating current controlled current source in LTspice
Behavioural sources are very versatile, but sometimes can suffer. Using the VCCS (aka G-source) should eliminate the problem. In this case, since you are only taking a current and multiply it by a constant, you can replace B2 by a VCCS like this:



It takes the voltage across R3, divides it by its value (1/16k), and then multiplies it by some constant (290).

Alternately, you can either insert a zero-valued voltage source in series with R3 (let's presume it's called Vx), then use an F-source with the value Vx 290 (careful at the direction of the source, + ---> -), or replace R3 with the same zero-valued voltage source, but with Rser=16k added, same F-source.