Symbol Layer with buffer has 'avoid-edges' behavior

[riastrad]

Platform: Node.js
Mapbox SDK version: v5.0.2

When a symbol layer uses text-variable-anchor but the underlying data has a sizeable buffer value, I would expect it to be rendered even when it crosses a tile boundary. However, when text-variable-anchor is render treats it as if it also had avoid-edges=true set (which it does not). This results in important poi icons disappearing if they cross a tile boundary.

Steps to trigger behavior

1. Create a style that uses text-variable-anchor for a symbol layer
2. Render style in "tile" mode
3. Note the absence of the icon & text label (compared to any other rendering mode)

Expected behavior

When the tiles are rendered client-side:

Actual behavior

When the tiles are rendered server-side using Tile mode:

cc/ @mapbox/gl-core @mapbox/static-apis

[chloekraw]

@riastrad this behavior was intentionally added in #15828, under the premise that "unpredictable labels" should have avoid edges automatically enabled, and a label that can be placed in multiple positions qualifies as an "unpredictable label." Is the suggested fix to resolve this ticket to revert #15828?

EDIT: I linked to the wrong pr. I meant #15854

[kkaefer]

I think we only need this when placement mode is MapMode::Tile
/cc @ansis

[chloekraw]

Oh, I meant to link to this pr instead: #15854

[riastrad]

This is no longer the case 👍