Flashing like this is often associated with load issues. Also, deep dimming in particular can affect the operation of a lamp.
CFLs present a load that is not identical to an incandescent load.
it could be related to
the number of lamps on a circuit, when two-way switches are used or pilot lights are involved.
Using a CFL may have exposed an underlying issue with the wiring, the luminaire itself or the supply.
The acceptable voltage range for Most CFL range is typically 198 to 254V.
If the sine wave is clipped, then this could be contributing to the issue.
now its down to a source a lamp / dimmer / transformer and test the combination that is compatible.