Elk layout subgraph labels have no space with htmlLabels=false

[Zannick]

Description

In flowchart/graph diagrams, if I create a subgraph and use the elk layout, the subgraph title has no collision: the nodes and subgraphs inside it overlap the title, which is also off-center. Seems similar to #1177 and #1572--it looks like an html text element that has no width and is overflowing.

But it works when I reenable htmlLabels (except for the part where htmlLabels don't work in CLI generation due to #2688 et al).

Steps to reproduce

%%{init: {"flowchart": {"htmlLabels": false, "defaultRenderer": "elk"}}}%%
graph TB

subgraph NOT_CENTERED
    A;
    B;
    C;
end

See the live editor:

Screenshots

Code Sample

No response

Setup

• Mermaid version: 10.0.0
• Browser and Version: Chrome Version 110.0.5481.177 (Official Build) (64-bit)

Additional Context

No response