Im using latest TCPDF version(5.9). But have some strange problems with encoding. I need Lithuanian language symbols like: ąčęėįšųūž. But get only few of it. Other remain li
I had the same issue with Romanian characters and the problem wasn't the encoding, LC_CTYPE or other setting from TCPDF, but the font I used.
I mention that I used TWIG templating with Courier font.
You can try to change your font to freeserif