autonumber on sequence diagram, drifts vertical alignment.

[ZcuBa]

Description

When I use autonumber in a sequence diagram, the events accumulates a horizontal misalignment with the column it belongs to, so numbers and event arrows, are drifting as the sequence diagram grows.

Steps to reproduce

create a sequence diagram with autonumbering e.g.
you can do it in the live editor, if you d' like, I used v. 10.9.1

https://mermaid.live/edit#pako:eNqN0L0KwyAQB_BXkVubDEk2h0x9gEJXl6tePiBqa7yhhLx7DakUSih1OuXn_04X0N4QSJjpweQ0nUfsA1rlRFrI0Tu2Nwr7_lKJsmzbUyqkUO4bierN6szqn6zJrNlYbvC5eJD1T3xzMCwUYClYHE1667IBBXEgSwpSBhjqkKeoQLk10S3s-nQaZAxMBfDdYMxfA7LDaU6nwXM_7GR9AfSyXjU

sequenceDiagram
    autonumber
    P1 -->>+ P1: 

    autonumber 1
    P2 -->>+ P2: 

    autonumber 1
    P3 -->>+ P3: 
    P1 ->>+ P2: 
    P2 -->>+ P2: 
    P2 -->>+ P2: 

    autonumber 3
    P1 -->>+ P1: 

Loading

and see that the P2 column nodes have drifted so much that by the third event, it is completely detached from the event column.

Screenshots

Code Sample

sequenceDiagram
    autonumber
    P1 -->>+ P1: 

    autonumber 1
    P2 -->>+ P2: 

    autonumber 1
    P3 -->>+ P3: 
    P1 ->>+ P2: 
    P2 -->>+ P2: 
    P2 -->>+ P2: 

    autonumber 3
    P1 -->>+ P1:

Setup

• Mermaid version: 10.9.1
• Browser and Version: Chrome, Edge, vscode
  they all do it.
  screenshot was captured in edge
  Version 127.0.2651.74 (Official build) (64-bit)

Suggested Solutions

No response

Additional Context

except from the drifting, the feature works great