Simple Tab Groups addon crashes Firefox

[arabesc]

Describe the bug
Simple Tab Groups addon crashes Firefox.

To Reproduce
Steps to reproduce the behavior:

1. Install Simple Tab Groups addon;
2. Create new group;
3. RMB on the new group name;
4. Select Group settings;
5. See app crash.

Expected behavior
No crash.

Desktop (please complete the following information):

• OS and version: macOS 10.14.3
• Firefox version: 64.0.2
• Simple Tab Groups version: 3.3.4

Additional context
AdapterDeviceID: 0x1b06
AdapterVendorID: 0x10de
Add-ons: jid1-MnnxcxisBPnSXQ%40jetpack:2018.12.17,jid1-XAZYVkS6OPAR5Q%40jetpack:0.8.20,uBlock0%40raymondhill.net:1.17.4,onepassword4%40agilebits.com:4.7.3.90,copyplaintext%40eros.man:1.8,%7B2e5ff8c8-32fe-46d0-9fc8-6b8986621f3c%7D:1.19.0,%7B72b2e02b-3a71-4895-886c-fd12ebe36ba3%7D:0.2.1,%7B41c87c37-5730-46d1-92a0-2a05c4cb75c8%7D:1.0,historyblock%40kain:2.0,abb%40amazon.com:10.1805.2.1019,%7B522e3f34-aac8-4f2b-89f9-da90cee90806%7D:1.3.1,simple-tab-groups%40drive4ik:3.3.4,fxmonitor%40mozilla.org:2.8,screenshots%40mozilla.org:35.0.0,webcompat%40mozilla.org:3.0.0,formautofill%40mozilla.org:1.0,webcompat-reporter%40mozilla.org:1.1.0
BuildID: 20190108160530
ContentSandboxCapable: 1
ContentSandboxLevel: 3
CrashTime: 1548203047
DOMIPCEnabled: 1
FramePoisonBase: 9223372036600930304
FramePoisonSize: 4096
GraphicsCriticalError: |[0][GFX1-]: [OPENGL] Failed to init compositor with reason: FEATURE_FAILURE_OPENGL_CREATE_CONTEXT (t=0.597862) |[1][GFX1-]: [OPENGL] Failed to init compositor with reason: FEATURE_FAILURE_OPENGL_CREATE_CONTEXT (t=38.2269) |[2][GFX1-]: [OPENGL] Failed to init compositor with reason: FEATURE_FAILURE_OPENGL_CREATE_CONTEXT (t=130.212)
InstallTime: 1547538525
Notes: FP(D00-L1000-W00000000-T000) WR? WR- OMTP? OMTP+4 GL Layers? GL Layers- GL Context? GL Context+
ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
ProductName: Firefox
ReleaseChannel: release
SafeMode: 0
SecondsSinceLastCrash: 140
StartupCrash: 0
StartupTime: 1548202912
TelemetryEnvironment: 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ThreadIdNameMapping: 8:"Gecko_IOThread",9:"Timer",10:"Socket Thread",11:"JS Watchdog",15:"JS Helper",12:"JS Helper",14:"JS Helper",13:"JS Helper",16:"JS Helper",17:"JS Helper",18:"JS Helper",19:"JS Helper",22:"Cache2 I/O",23:"Cookie",26:"GMPThread",27:"Compositor",28:"ImgDecoder #1",29:"ImageIO",30:"IPDL Background",33:"DOM Worker",36:"StyleThread#2",38:"StyleThread#4",34:"StyleThread#0",39:"StyleThread#5",37:"StyleThread#3",35:"StyleThread#1",43:"ImageBridgeChild",44:"ProcessHangMon",45:"DataStorage",46:"URL Classifier",47:"Classifier Update",48:"Cache I/O",47:"DOM Worker",48:"localStorage DB",50:"mozStorage #1",51:"mozStorage #2",52:"ImgDecoder #2",53:"ImgDecoder #3",54:"ImgDecoder #4",59:"mozStorage #3",60:"QuotaManager IO",57:"mozStorage #4",64:"DOM Worker",67:"mozStorage #5",67:"mozStorage #6",71:"DOM Worker",76:"SaveScripts",72:"mozStorage #7",74:"StreamTrans #144",
Throttleable: 1
URL: https://github.com/drive4ik/simple-tab-groups/issues
UptimeTS: 135.05552404
Vendor: Mozilla
Version: 64.0.2
useragent_locale: en-US

This report also contains technical information about the state of the application when it crashed.

[GonzRon]

I just tried your reproduction steps (on Windows 10 x64) FF 64.0.2, STG 3.3.4 and could not reproduce the crash.

[GonzRon]

this crash:
[OPENGL] Failed to init compositor with reason: FEATURE_FAILURE_OPENGL_CREATE_CONTEXT

seems to be related to hardware acceleration.

Try disabling hardware acceleration and see if the crash reproduces by following these steps:
https://www.askvg.com/how-to-disable-hardware-acceleration-gpu-rendering-in-mozilla-firefox-4-0-to-fix-font-problem/

you can also try disabling webGL for testing purposes to see if this confirms the root cause of the crash.

https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration#w_disabling-webgl

[Drive4ik]

This is Firefox issue, not addon's...