HD 44780 with I2C converter library problem

hello, have weird problem display (or else). have blue lcd 16x2 connected via i2c converter. have tried various libraries 1 "almost" working - popular liquidcrystal_i2c maroschwartz. i've set i2c pins adress scanned i2c scanner 0x3f, , set number of columns , rows. , after upload strange things happens - lcd displays first letter of every string. instead of "hello, world!" have "h" in first column of first row. discovered next numbers displayed directly variable correct. sure not problem lcd because works board old program using same configuration (hd44780 + i2c + pro mini),.

i've spend 3 days trying different libraries, arduino boards, usb ttl converters , set ups. result same! clue using windows 10.

finally, figured out! problem wasn't caused hardware or library. i'd searched web alternative arduino ide programs , i've found online editor codebender.com uploaded hello world sketch , worked perfectly, whole phrase appeared on screen on lcd.

i give "karma" myself if able so.

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