Column widths are not retained and not persisted

[abalabin-bamfunds]

Bug Report

Steps to Reproduce:

Open the superstore example. Resize the first Sales column to be wide (or narrow). Flip to the 'untitled' tab, flip back. The Sales column is back to its auto-fit size.

After columns are manually resized, open debug JSON panel one can see that column sizes are not written into plugin_config/columns.

The only test I found looking at column width persistence is skipped in datagrid.spec.ts. I think maybe refactoring in 4.1 introduced a regression?

Expected Result:

I expect when user resizes a column manually the size to be retained and persisted.

Actual Result:

Columns revert to auto-fit sizes.

Environment:

• Win 11
• perspective 4.4
• Edge Browser to https://perspective-dev.github.io/blocks/superstore/index.html

[abalabin-bamfunds]

Seems to have been partially fixed in 4.4.1: v4.4.0...v4.4.1#diff-858dd44da61db543bf3bccb36f08189ad9f381a3917a1f52505b677be5aa8cdc

However, restoring a workspace from a json that contains comlum_size_override does not seem to work (or works very occasionally?). If I change the datagrid panel in examples/blocks/src/dataset/layout.json to the below snippet, the column does not show in the given size and the json on the config panel does not have any overrides:

        "PERSPECTIVE_GENERATED_ID_0": {
  "version": "4.4.1",
  "columns_config": {},
  "plugin": "Datagrid",
  "plugin_config": {
    "columns": {
      "Float 2": {
        "column_size_override": 311.1875
      }
    },
    "scroll_lock": false,
    "edit_mode": "READ_ONLY"
  },
  "table": "superstore",
  "theme": "Pro Light",
  "title": "Generated Data",
  "group_by": [
    "String 0",
    "String 1"
  ],
  "split_by": [],
  "sort": [],
  "filter": [],
  "group_rollup_mode": "rollup",
  "expressions": {},
  "columns": [
    "Float 2",
    "Float 3",
    "Float 4",
    "Integer 0",
    "Integer 1",
    "Datetime 4",
    "Boolean 0"
  ],
  "aggregates": {
    "Boolean 0": "dominant",
    "Datetime 4": "dominant"
  }
},