[BUG] Dev Tools: Callback map error: Not possible to find intersection inside of the rectangle
Author: ghaarsmaCreated Aug 6, 2026Updated Aug 17, 2026
LabelsbugP2size: 3
When trying to show the Callbacks on the Dash Dev Tools, the attached example generates an error and the callback map does not show up.
Tested with Dash 4.4.1 and both Firefox and Chrome. Also tried older versions of Dash (3.4.0 and 4.x with the same results). To reproduce, run the attached example.
Note: Comment out callback toggle_template_modal on lines 239-246 and the callback map will get generated. Removal of some other callbacks like save_proposed_mapped can result on other errors like: can't access property "order", g.node(...) is undefined
Source: plotly/dash