Issue with serial on esp8266

[davidkingsman]

I am using a nodemcu to write to the display modules.
While programming, I noticed serial.print statements do not work at all or just sometimes unreliably. That behavior is only there if the FlipDot_5x7 library is included.
I noticed a bunch of #ifdef ESP8266 in the library, so it should be optimized for it.
Is that behavior expected?

[davidkingsman]

Using the display method also always triggers a watchdog reset on the esp8266. The library seems to be unusable on this chip when combined with wifi libraries.