Thanks for the report.

Can you attach the log file from your Build Folder "PSRAM_Test_N16R8_noide.ino_DebugGDB.log".

If you cannot see this please enable the settings at the top of the page and add the complete build output from your project for us to review.

Thanks for the log, there should also be another file "PSRAM_Test_N16R8_noide.ino_DebugOpenOCD.log".

When you next replicate it can you send the logs again as well, just in case there are any further clues.

I can replicate what appears to be the same issue stepping into delay() and various other functions, but only if I have 2 breakpoints already set.  If I reduce this to 1 then it seems to work OK.... do you have 2 or more breakpoints already set in your software?

Thanks for the update, Can you confirm a specific function you get the error stepping into?

If you can also attach the full build output with the settings enabled shown at the top of the page it will allow us to see all the other options selected so we can replicate more accurately.

Thanks for the logs and we have setup the same sketch and debugging settings, however the issue (and errors in the logs) only seems to replicate for us when we have 2 breakpoints set in total.  If only 1 or 0 are set the stepping in and over works without generating the "unknown stopping event".

In the logs from GDB it shows it cannot insert the breakpoint:
&"Warning:\n"
&"Cannot insert breakpoint 0.\n"
&"Cannot access memory at address 0x42001842\n"

And due to the quirks of the ESP32 OpenOCD implementation this is most often due to there being 2 breakpoints already set, so when the step function tries to inject another breakpoint it fails as there are only 2 hardware breakpoints allowed at any one time.
https://docs.espressif.com/projects/esp-idf/en/v4.2-beta1/esp32/api-guides/jtag-...

We will continue looking at this as improving GDB's knowledge of the Flash Map may potentially help.

Do you have any disabled breakpoints set in the code or in files that aren't open? (the Debug > Windows > Breakpoints list can be used to see them all in one place)