In Java Edition, if the candles stand without support (for example, in the air), then new candles can no longer be added to them (if there are less than 4 of them in the block).
Steps to Reproduce:
- Place 1 candle.
- Break the support block underneath.
- Try adding more candles to this candle.
You have succeeded in adding a few more candles to the flying candle.
You cannot add more candles to candles without support (to match the java version).