OTA uploads stopped working after updating to v1.36.1
as described above specifying port 3232 fixed problem. So platformio.ini reads:
[env:esp32dev]
platform = espressif32
board = esp32dev
framework = arduino
upload_protocol = espota
upload_port = 192.168.1.105
upload_flags = -p 3232
Done. Thank you platformio.org forum community!