We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
Bug: io.imshow() and io.show() do not work as expected in winows
In my win7-x64 environemnt, io.imshow() and io.show() do not work as expected. I use  io.imshow() to show mutiple images, and when I call io.show() to show all the images, only the last image shows. In linux, it works well and all the images will show when I call io.show()


--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `skimage/io/_plugins/matplotlib_plugin.py`
Content:
```
1 import matplotlib.pyplot as plt
2 
3 
4 def imshow(*args, **kwargs):
5     kwargs.setdefault('interpolation', 'nearest')
6     kwargs.setdefault('cmap', 'gray')
7     plt.imshow(*args, **kwargs)
8 
9 imread = plt.imread
10 show = plt.show
11 
12 
13 def _app_show():
14     show()
15
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/skimage/io/_plugins/matplotlib_plugin.py b/skimage/io/_plugins/matplotlib_plugin.py
--- a/skimage/io/_plugins/matplotlib_plugin.py
+++ b/skimage/io/_plugins/matplotlib_plugin.py
@@ -2,6 +2,8 @@
 
 
 def imshow(*args, **kwargs):
+    if plt.gca().has_data():
+        plt.figure()
     kwargs.setdefault('interpolation', 'nearest')
     kwargs.setdefault('cmap', 'gray')
     plt.imshow(*args, **kwargs)

{"golden_diff": "diff --git a/skimage/io/_plugins/matplotlib_plugin.py b/skimage/io/_plugins/matplotlib_plugin.py\n--- a/skimage/io/_plugins/matplotlib_plugin.py\n+++ b/skimage/io/_plugins/matplotlib_plugin.py\n@@ -2,6 +2,8 @@\n \n \n def imshow(*args, **kwargs):\n+    if plt.gca().has_data():\n+        plt.figure()\n     kwargs.setdefault('interpolation', 'nearest')\n     kwargs.setdefault('cmap', 'gray')\n     plt.imshow(*args, **kwargs)\n", "issue": "Bug: io.imshow() and io.show() do not work as expected in winows\nIn my win7-x64 environemnt, io.imshow() and io.show() do not work as expected. I use  io.imshow() to show mutiple images, and when I call io.show() to show all the images, only the last image shows. In linux, it works well and all the images will show when I call io.show()\n\n", "before_files": [{"content": "import matplotlib.pyplot as plt\n\n\ndef imshow(*args, **kwargs):\n    kwargs.setdefault('interpolation', 'nearest')\n    kwargs.setdefault('cmap', 'gray')\n    plt.imshow(*args, **kwargs)\n\nimread = plt.imread\nshow = plt.show\n\n\ndef _app_show():\n    show()\n", "path": "skimage/io/_plugins/matplotlib_plugin.py"}], "after_files": [{"content": "import matplotlib.pyplot as plt\n\n\ndef imshow(*args, **kwargs):\n    if plt.gca().has_data():\n        plt.figure()\n    kwargs.setdefault('interpolation', 'nearest')\n    kwargs.setdefault('cmap', 'gray')\n    plt.imshow(*args, **kwargs)\n\nimread = plt.imread\nshow = plt.show\n\n\ndef _app_show():\n    show()\n", "path": "skimage/io/_plugins/matplotlib_plugin.py"}]}