[2.4, MC1.16.5, E6E1.5.1] Anchors suddently stops working (quick fixable!)

[BuggaNoia]

Suddently when I try to use the Travel Anchor, nothing happend (no teleport). Sneaking on one just say: "No travel anchor found". Using a tool with Teleporting makes the zapp sound but doesn't teleports me.

Right before I moved around with Waystones in the End and put down an (inactive) Resourcebul Bees Ender Beecon.

Remove/Replacing doesn't change anything as well as putting down new one in new dimension or where ever.

Quick fix is: Changing the rendering distance (I use OptiFine_1.16.5_HD_U_G8) back and forth. (Really. No joke)