Happening for me in v1.17.0 running on both Android and Windows 10. Wasn't an issue before the update.
This has suddenly started happening for me (just after building a wool farm with observers relying on the change) on 1.14 - not good!
I can confirm this one. Vanilla 1.7.2 server and clients. First noticed when an arrow stuck in sand not far from world spawn persisted for many in-game days (was used as a navigational aide); and more recently in a skeleton grinder whenever skeletons have a line-of-sight on a player and many shoot, there are hundreds of persistent arrows embedded in nearby structures.
This has happened to me virtually every time I'm taking a boat across stretches of water on the most recent preview, on any world I create. It seemed to happen more quickly when I was holding a map but that might be me projecting.
A quick capture: https://youtu.be/lXetBeViDxk