Putting a tinted glass in front of the candle will also block the particle art of the candle flame, making the candle looks like it is not lighted, while it actually is.
Normal fire does not experience such an issue.
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Hey, this appears to be a duplicate of MC-188529, which is currently marked as "won't fix". Apparently, one must enable the "fabulous" graphics setting in order to see particles through tinted glass or translucent blocks.
violine1101
Correct. Particles behind semi-transparent textures currently only work in Fabulous mode.