fabianwennink / iconcaptcha-asp.net Goto Github PK

Bug report requirements

• I have confirmed that this is a bug and not a configuration/user error.
• I have searched for existing issues and confirmed that my issue has not been reported before.

IconCaptcha version

latest

ASP.NET version

ASP.NET Core 6.0

Browsers affected

Google Chrome, Microsoft Edge

Expectation

When I select the icon that appears least with my browser's zoom at 67%, I expect the verification to succeed

Actual behaviour

Verification fails, receiving the "UH OH. You've selected the wrong image." message.

Relevant log information

icon-captcha.min.js:2 
        
        
       POST http://localhost:5000/iconcaptcha 500 (Internal Server Error)
ajax @ icon-captcha.min.js:2
b @ icon-captcha.min.js:2
(anonymous) @ icon-captcha.min.js:2
setTimeout (async)
click @ icon-captcha.min.js:2

Additional information

While I encounter this issue with IconCaptcha implemented in my own solution, the same behaviour is observed using the demo project from the "3.x develop" branch.
This issue also occurs for users with custom scaling on their computers (though I do not have exact scaling settings to share), but is reproduceable when setting the browser zoom to 67%. This occurs specifically when the captcha is loaded with the browser at this zoom; if the browser zoom is at any other setting when the captcha is loaded, then the zoom is changed to 67% and the correct image is selected, the verification is completed successfully.