Example for the bug described in the Plotly Community Forum [link](https://community.plotly.com/t/go-figurewidget-layout-updating-itself-when-re-running-cell/48409)

plotly_layout_reset_bug.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import plotly.graph_objects as go"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Create a colorbar with go.Bar\n",
    "\n",
    "cname = \"fall\"\n",
    "num_points = 200\n",
    "width = 500\n",
    "height = 50\n",
    "\n",
    "cmin, cmax = 0, 1\n",
    "step = (cmax - cmin) / (num_points - 1)\n",
    "linspace = [cmin + (x * step) for x in range(num_points)]\n",
    "\n",
    "data = [\n",
    "    go.Bar(\n",
    "        orientation=\"h\",\n",
    "        x=[step] * num_points,  # width\n",
    "        y=[cname] * num_points,  # group\n",
    "        hoverinfo=\"skip\",\n",
    "        marker=dict(\n",
    "            colorscale=cname,\n",
    "            color=linspace,\n",
    "            line_width=0,\n",
    "            cmin=cmin,\n",
    "            cmax=cmax,\n",
    "        ),\n",
    "    ),\n",
    "]\n",
    "\n",
    "layout = dict(\n",
    "    barmode=\"stack\",\n",
    "    barnorm=\"\",\n",
    "    bargap=0,\n",
    "    height=height,\n",
    "    width=width,\n",
    "    margin=dict(b=0, t=0, l=0, r=0),\n",
    "    paper_bgcolor=\"rgba(0,0,0,0)\",\n",
    "    plot_bgcolor=\"rgba(0,0,0,0)\",\n",
    "    modebar_bgcolor=\"rgba(0,0,0,0)\",\n",
    "    showlegend=False,\n",
    "    yaxis=dict(showgrid=False, showticklabels=False),\n",
    "    xaxis=dict(\n",
    "        showgrid=False,\n",
    "        showticklabels=False,\n",
    "        ticks=\"\",\n",
    "    ),\n",
    ")\n",
    "\n",
    "fig = go.FigureWidget(data=data, layout=layout)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "8f51dfd75928451b896051c8ca0495be",
       "version_major": 2,
       "version_minor": 0
      },
      "text/plain": [
       "FigureWidget({\n",
       "    'data': [{'hoverinfo': 'skip',\n",
       "              'marker': {'cmax': 1,\n",
       "                        …"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'rgba(0,0,0,0)'"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "fig.layout.paper_bgcolor"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "8f51dfd75928451b896051c8ca0495be",
       "version_major": 2,
       "version_minor": 0
      },
      "text/plain": [
       "FigureWidget({\n",
       "    'data': [{'hoverinfo': 'skip',\n",
       "              'marker': {'cmax': 1,\n",
       "                        …"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "fig"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'rgba(0,0,0,0)'"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "fig.layout.paper_bgcolor"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "=== Executing: ===\n",
      "fig\n",
      "=== Output: ===\n"
     ]
    },
    {
     "data": {
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "8f51dfd75928451b896051c8ca0495be",
       "version_major": 2,
       "version_minor": 0
      },
      "text/plain": [
       "FigureWidget({\n",
       "    'data': [{'hoverinfo': 'skip',\n",
       "              'marker': {'cmax': 1,\n",
       "                        …"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "%rerun 3 # Need to re-run manually for the bug to appears"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "=== Executing: ===\n",
      "fig.layout.paper_bgcolor\n",
      "=== Output: ===\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "'rgba(0,0,0,0)'"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "%rerun 4 # Need to re-run manually for the bug to appears"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
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