subtitle's offset number indicator does not update

when the Plex Home theater’s lang is in Spanish(Argentina) and move the subtitle [ < ] or [ > ] the timer indicator does not change, the subtitles are moved but the display indicator in 0,000ms, but iwhen the lang is English it change according to the amount of offset it is set.

P.S: is possible to manage the subtitle offset using the keyboard?

Try this tool…Here

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