I've flown to/from TPE twice in the past 6 weeks, all in economy:
KUL-TPE - B738 - no wine offered initially, but fetched from galley upon request
TPE-KUL - B738 - no alcohol available in economy, flat-out refused
KUL-TPE - A333 subbed for B738 - no alcohol in economy, same as above
TPE-KUL - B738 - wine on the trolley, offered freely with meal
No consistency at all