On multiple machines Spyder corrupts files .. it crashes eventually and gives wrong file messages for instance if you rename files - ie change a version number after a file name, say:
ie: save serve,py as serve1.py it will show serve1.py but give a message serve1.py is unavailable do you want to close it.. such a basic error.. you must answer NO to retain the file...
If you do this a few times Spyder will crash .. loose everything.. and the last files will usually be a version ago. like yesterdays work, the autosave restore overwrites the current version , is inconsistent some time generations old.. auto save should be every 5 minutes,,,,
Find/Replace in a highlight section of a file will crash the app sometimes when repeated...
Recent list pops up with nothing recent after crash ,, more certainty that this important area has been overlooked - the online error pops up repeatedly until you reboot Spyder or it crashes randomly - and the issue reported will not co-operate, the best is C debugger - not my cup of tea