Posible bug in LCD plugin

[jblb]

Hi all,

first i want to tell you that there is at least 2 different flavor for PCF8574/HD44780LCD board, and i got the wrong one. After some search i finally found http://playground.arduino.cc/Code/LCDi2c that show two libraries. they are switchable one for one and the use of the good one give me some char on my LCD !
But everything didn't work well : i can't display anything on the 4th line (LCD is 4x20) every display requested for 4th line is displayed on the 2nd one, by the web set up or by http://<ESP IP address>/control?cmd=lcd,<row>,<col>,<text>

Does somebody else experiment same bug, or does it come from my library change ?

ESPEasy is last one from git / EspArduino is 2.2.0 and Arduino IDE is 1.6.5 on linux