Text on signs disappeared on my realms

I noticed some text on my signs disappeared while other text stayed. I believe only the signs with glow ink got erased since some signs are still intact. It's just the text that's gone, the sign is still there. I believe they were all spruce signs (but I don't think I had other wood signs that had glow ink). Maybe it had something to do with downloading/uploading the world from/to Minecraft realms.

Thanks in advance