TXB0104: The first pulse passing through the part is distorted

Tool/software:

Hello,

I am using this part as uni-directional voltage translator between an FPGA and various programmable RF devices. Here's an example schematic:

I have noticed that the first pulse passing through is always distorted as shown below:

The blue trace is the OE signal and the yellow is the CLK output (pin B4). If I remove the series resistor at the output, the signal looks normal. 

It appears that the device takes long time to switch the direction although it is not clear why.

I know that I don't need a bidirectional device for this application to begin with but that's what historically being used in previous designs and I have multiple boards already built. Also, TXU0104 devices in the same package are currently out of stock everywhere.

Any help in understanding this phenomenon will be highly appreciated.

Thanks,
/Mikhail