René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[Bug]: minus signs not rendered in PDF export with TeX","articleBody":"### Bug summary\n\nWhen I use TeX to render, minus signs do not appear in exported PDFs anymore.\n\n* They show fine in Jupyter and exported PNGs or SVGs.\n* Other mathematical symbols are unaffected (also see the example). So far, I only found minus signs to be affected.\n* Activating `axes.unicode_minus` doesn’t help.\n* If I downgrade Matplotlib to 3.10.9 (and leave everything the same), the minuses are rendered. I therefore would exclude a straightforward problem with my TeX installation etc. Perhaps, this is related to #30039.\n\n### Code for reproduction\n\n```Python\nfrom matplotlib.pyplot import subplots\nfrom matplotlib import rcParams\n\nrcParams[\"text.usetex\"] = True\n# rcParams[\"axes.unicode_minus\"] = False\n\nfig,axes = subplots(figsize=(3,2))\naxes.plot([-1, 1], [-1, 1])\naxes.text(-0.5,0.5,r\"$\\sum_{\\alpha=-1}^{\\Psi} \\pm \\pi$\")\n\nfig.savefig(\"test.pdf\")\n```\n\n### Actual outcome\n\n\u003cimg width=\"300\" height=\"200\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/d8ba2001-3a66-4899-a2f8-f0bd6acce89f\" /\u003e\n\n### Expected outcome\n\n\u003cimg width=\"300\" height=\"200\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/30c35c64-c7c3-4bed-9e77-34e8be0bf7b4\" /\u003e\n\n### Operating system\n\nArch\n\n### Matplotlib Version\n\n3.11.0\n\n### Matplotlib Backend\n\nqtagg\n\n### Python version\n\n3.14.5\n\n### Installation\n\nLinux package manager","author":{"url":"https://github.com/Wrzlprmft","@type":"Person","name":"Wrzlprmft"},"datePublished":"2026-06-19T12:01:55.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/31925/matplotlib/issues/31925"}