Can Minecraft for Windows 10 create Map Markers?

I have read about creating a Map Marker with Bedrock edition v. 1.9.15: create a banner, create a locator map, and point the map at the banner and right-click. But, when I do that, nothing happens. I thought that Windows 10 version was part of Bedrock edition. I go to the Windows Store and it says I have the latest edition.
Anyone know?

Banners work to mark on maps in Java Edition, but unfortunately not in Bedrock.

You can create a map, then duplicate it and leave one in a frame where you want to have a marker, then take the copy to where you also want a marker, the 2 maps should then both have the markers on them.

I have tested this in 3 areas around the world, which are working, but left a map further away - again all copies of my main map, but there is one that doesn't show up.