Tile entities become invisible when repeatedly loading & unloading blocks via /structure load

Partner Rank: 3 - Normal

Verification Builds: Stable 1.20.51 & Preview 1.20.60.23

Regression Builds: Unknown/None

Summary: Tile entities become invisible when repeatedly loading & unloading blocks via /structure load

Affects currently Live Content: No

Impact: We are using the /structure load & /structure save commands as a core-mechanic of our redstone-based game. It will be unintuitive for an end-user to load into a level, and see some of their blocks (like pistons & chests) being invisible at random times.

Repro Steps:

1. Download & install the world sent to Greg Walls via Compass
2. Run function /function command/tp/04_china (while standing outside a level)
3. Place tile entities in the level boundary as shown in the video
4. Continuously leave & enter the level
5. After a few tries, notice the tile entities become invisible on load

Repro Rate: ~5% to 10%

Observed Results: Upon loading into the level via /structure load, some tile entities in specific chunks are invisible

Expected Results: Upon loading into the level, all tile entities are visible, all the time

Screenshots/Videos attached: Yes, sent to Greg Walls via Compass

Notes:

• It seems to be a chunk-based rendering issue, where tile entities in one chunk never turn invisible, but inconsistently do in another chunk.
• Another note, sometimes you can place a block next to the invisible tile entities, and they will update back to normal. And sometimes the block update would do nothing, and the tile entities would remain invisible.
• It is inconsistent & happens at random times.