Problem with ESP8266 Core 2.4.0

[Refenz]

Blynk library version: [0.5.0 / 0.4.10]
IDE: [Arduino]
IDE version: [1.8.4]
Board type: [NodeMCU / SF Blynk Board]

Scenario, steps to reproduce

Use last ESP8266 Core(2.4.0).
Open the sketch for Dynamic Provisioning.
Upload the sketch to the board.
Run and go through Dynamic Provisioning.

Expected Result

Successful connection of the board to the project.
Reboot the board does not take place.

Actual Result

[85219] WAIT_CONFIG => CONFIGURING
[88479] WiFi SSID: Dom2 Pass: 29727261
[88479] Blynk cloud: 1df953dbf7ec40a798bd78c63dc74f9b @ iotics.blynk.cc:8442
[88481] CONFIGURING => SWITCH_TO_STA
[88482] Switching to STA...
[89943] SWITCH_TO_STA => CONNECTING_NET
[89945] Connecting to WiFi: Dom2

Exception (0):
epc1=0xc845a2ce epc2=0x00000000 epc3=0x00000000 excvaddr=0x00000000 depc=0x00000000

ctx: sys 
sp: 3ffffba0 end: 3fffffb0 offset: 01a0

>>>stack>>>
3ffffd40:  00000090 3fff1a34 3fff1f8c 401043d1  
3ffffd50:  3fff34cc 3ffeec68 00000000 00000030  
3ffffd60:  0000003c 00000000 401030c9 3fff1a69  
3ffffd70:  3fff1a34 3fff1a34 3fff34cc 4010453d  
3ffffd80:  40214377 3fff34cc 3fff3502 40214380  
3ffffd90:  00000008 3fff189c 00000000 3ffee590  
3ffffda0:  40103e13 3ffee920 3fff1a34 3fff18a0  
3ffffdb0:  3fff1a69 00000000 3fff1a34 4021a19c  
3ffffdc0:  3fffc278 40101f8c 3fffc200 00000022  
3ffffdd0:  00000000 3fff34cc 3ffee078 00000016  
3ffffde0:  4023fc16 00000030 0000000f 3fff3510  
3ffffdf0:  3fff34cc 3fff2c88 3fff1a34 4021a3f4  
3ffffe00:  40210000 3fff3e7c 3ffeb722 3ffeefc0  
3ffffe10:  00000014 3fff2c88 3fff34cc 4021ada0  
3ffffe20:  3ffeed38 3ffeec68 3ffef3b8 00000018  
3ffffe30:  3fff2c84 000000ff 00000000 00000006  
3ffffe40:  3fff198c 3ffffed0 3ffffed0 00000001  
3ffffe50:  326d6f44 0574da00 401021f2 3fff1a34  
3ffffe60:  3fff2c84 3fff2e34 00000000 4021ade0  
3ffffe70:  3fff1a34 00000000 00000000 3fff21b4  
3ffffe80:  ffffffd7 3ffeb6c0 ffffffd7 4021ae06  
3ffffe90:  3fff1a34 00000000 00000000 4021b4ff  
3ffffea0:  4000050c 3fff3e7c 3ffeb6c0 40218546  
3ffffeb0:  3fff1a34 00000030 00000011 ffffffff  
3ffffec0:  00000218 3fff2c88 3fff3524 3fff3524  
3ffffed0:  3ffef9f8 4021543c 3fff19ac 3fff2c84  
3ffffee0:  4021533c 00000000 3fff1a7c 40218889  
3ffffef0:  00000000 3fffdcb0 3ffefa48 402148f1  
3fffff00:  3fff04a8 0000029a 0000029a 4010020c  
3fffff10:  4021533c 3fff164c 3fff2fc4 3fff1648  
3fffff20:  4021533c 3fff164c 00000000 40214e34  
3fffff30:  4022c7dc 3ffee230 3fff3e7c 40215344  
3fffff40:  40223336 3ffee230 00000000 4021548c  
3fffff50:  00000000 00000000 00000001 4020cfb1  
3fffff60:  402338b4 3ffef9f8 3ffefa20 60000600  
3fffff70:  05753c93 3ffefa20 3ffef9f8 402338c1  
3fffff80:  40233906 3fffdab0 00000000 3fffdcb0  
3fffff90:  3ffefa30 3fffdad0 3fff05a8 4020cf4b  
3fffffa0:  40000f49 40000f49 3fffdab0 40000f49  
<<<stack<<<

 ets Jan  8 2013,rst cause:2, boot mode:(1,6)


 ets Jan  8 2013,rst cause:4, boot mode:(1,6)

wdt reset

P.S. connection is successful if use ESP8266 Core (2.4.0-rc2)

[vshymanskyy]

This is caused by another bug in the Core. Hopefully fixed with: esp8266/Arduino#4105

Workaround

With 2.4.0 the workaround would be to select Tools -> lwIP Variant -> v1.4 Prebuilt. Open-source variant should also work.

[Refenz]

@vshymanskyy
Thanks!
The workaround works fine.