René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"RectangleSelector fails to clear itself after being toggled inactive and then back to active.","articleBody":"\u003c!--To help us understand and resolve your issue, please fill out the form to the best of your ability.--\u003e\r\n\u003c!--You can feel free to delete the sections that do not apply.--\u003e\r\n\r\n### Bug report\r\n\r\n**Bug summary**\r\n\r\nRun examples/widgets/rectangle_selector.py.  Draw a rectangle.  Draw another rectangle: the first one is cleared out.  Toggle the selector inactive with \"Q\".  Toggle it back to active with \"A\".  Draw yet another rectangle: the second rectangle doesn't get cleared out.\r\n\r\n**Expected outcome**\r\n\r\nOlder rectangles get cleared out regardless of whether the widget was momentarily toggled inactive previously.\r\n\r\n**Matplotlib version**\r\n\u003c!--Please specify your platform and versions of the relevant libraries you are using:--\u003e\r\n  * Operating system: archlinux\r\n  * Matplotlib version: master\r\n  * Matplotlib backend (`print(matplotlib.get_backend())`): any\r\n  * Python version: 38\r\n  * Jupyter version (if applicable):\r\n  * Other libraries: \r\n\r\n\u003c!--Please tell us how you installed matplotlib and python e.g., from source, pip, conda--\u003e\r\n\u003c!--If you installed from conda, please specify which channel you used if not the default--\u003e\r\n\r\n","author":{"url":"https://github.com/anntzer","@type":"Person","name":"anntzer"},"datePublished":"2020-05-21T11:39:55.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/17476/matplotlib/issues/17476"}