Misleading range_slider value labels

Describe the bug

With the following example: mo.ui.range_slider(0, 10, 0.01, (1.2, 1.500000000000001), full_width=True), a hover on the slider shows only the right value:

It can also sporadically happen when starting with round numbers (1.2, 1.5) and dragging the range. The resulting floating point often has a ...0000001 decimal suffix and if only one of the edges has it, it will completely cover the other edge's label.

A solution to this problem can either be appropriate rounding, adding spacing between the labels, or staggered rows.

Will you submit a PR?

• Yes

Environment

{
  "marimo": "0.24.2",
  "editable": false,
  "location": "/Users/yairchu/dev/undersampled_add_sub/.venv/lib/python3.13/site-packages/marimo",
  "OS": "Darwin",
  "OS Version": "25.6.0",
  "Processor": "arm",
  "Python Version": "3.13.2",
  "Locale": "en_US",
  "Binaries": {
    "Browser": "140.0.7339.134",
    "Node": "v23.11.0",
    "uv": "0.11.16 (135a36367 2026-05-21 aarch64-apple-darwin)"
  },
  "Dependencies": {
    "click": "8.5.0",
    "docutils": "0.23",
    "itsdangerous": "2.2.0",
    "jedi": "0.19.2",
    "markdown": "3.10.3",
    "narwhals": "2.26.0",
    "packaging": "26.3",
    "psutil": "7.2.2",
    "pygments": "2.21.0",
    "pymdown-extensions": "11.0.2",
    "pyyaml": "6.0.3",
    "starlette": "1.6.0",
    "tomlkit": "0.15.1",
    "typing-extensions": "4.16.0",
    "uvicorn": "0.52.4",
    "websockets": "17.1"
  },
  "Optional Dependencies": {
    "anywidget": "0.11.0",
    "loro": "1.13.2",
    "mcp": "2.2.0",
    "nbformat": "5.11.1",
    "openai": "3.13.0",
    "pandas": "3.0.5",
    "python-lsp-ruff": "2.3.4",
    "python-lsp-server": "1.15.0",
    "ruff": "0.16.7",
    "ty": "0.0.80"
  },
  "Experimental Flags": {}
}

Code to reproduce

mo.ui.range_slider(0, 10, 0.01, (1.2, 1.500000000000001), full_width=True)