[MCPE-134220] Glowed Ink Sack doesn't apply to sign

I've been trying to use the ink to make my signs glow, nothing is happening. I have tried high and low light levels

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We're tracking this issue in MCPE-129123, so this ticket is being resolved and linked as a duplicate.

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Same issue happend to me!

Just dye the sign beforehand, and it will work.