Inkscape 1.1, Ubuntu 20.10 I am writing my own extension to apply effects over a range of objects. I have found that once the number of objects gets to a high number, 100+ for example ( sometimes less ) Apply extension works correctly. However 'Live Preview' causes an instant crash to the desktop. #### Steps to Replicate 1. Open Inkscape 1. Draw 5 rectangles 1. Select all 1. Click on the Selection once to get to the skew/rotate handles 1. Move the transform/rotation center a bit 1. Select the Black and White extension 1. Click the Preview button 1. Click the Preview button again #### What happened? - Crash - Backtrace from 1.2-dev: [inkscape_backtrace-extension-live-preview_ac43753055.txt](https://gitlab.com/inkscape/inbox/uploads/dd7d0267948a8f6c6ea8f49041320274/inkscape_backtrace-extension-live-preview_ac43753055.txt) - Terminal output ``` inkscape Shortcut::read: invalid verb: DialogSpellcheck ** ERROR:./src/xml/simple-document.cpp:46:virtual Inkscape::XML::Event* Inkscape::XML::SimpleDocument::commitUndoable(): assertion failed: (_in_transaction) Bail out! ERROR:./src/xml/simple-document.cpp:46:virtual Inkscape::XML::Event* Inkscape::XML::SimpleDocument::commitUndoable(): assertion failed: (_in_transaction) Emergency save activated! Emergency save completed. Inkscape will close now. If you can reproduce this crash, please file a bug at https://inkscape.org/report with a detailed description of the steps leading to the crash, so we can fix it. ** ERROR:./src/xml/simple-document.cpp:46:virtual Inkscape::XML::Event* Inkscape::XML::SimpleDocument::commitUndoable(): assertion failed: (_in_transaction) Bail out! ERROR:./src/xml/simple-document.cpp:46:virtual Inkscape::XML::Event* Inkscape::XML::SimpleDocument::commitUndoable(): assertion failed: (_in_transaction) Aborted (core dumped) ``` #### What should have happened? - no crash Sample Attachments: Backtrace: [inkscape_backtrace-extension-live-preview_ac43753055.txt](https://gitlab.com/inkscape/inbox/uploads/dd7d0267948a8f6c6ea8f49041320274/inkscape_backtrace-extension-live-preview_ac43753055.txt), file originally occurred with: [scraps.svg](https://gitlab.com/inkscape/inbox/uploads/f999a725230f7947144da3c848927ea5/scraps.svg) #### Version info - Inkscape 1.1, Ubuntu 20.10 - Inkscape 1.2-dev (ac43753055) Linux Mint 20