"Use of getPreventDefault() is deprecated. Use defaultPrevented instead. " and BrowserLink Errors

Hi,

I attached a screenshot of both Chrome and Firefox console log. I am getting the “Use of getPreventDefault() is deprecated. Use defaultPrevented instead. ” warning on Firefox and Chrome. I am also using defult Blue-1 theme with 1.4.37 build and there are lots of warnings about theme appearances.

My previous question about flowlayout fluiding could be related with these warnings and errors. Because, on desktop Chrome and real mobile devices(InAppBrowser and other browsers) there is no fluiding but on desktop firefox, fluiding works as expected.

Some Firefox console error logs are below. Some parts of logs are in turkish. My test page is working under http://localhost:58160/ and https://localhost:44354/ links. There is no link setting for http://localhost:49581 on my project.

XML ayrıştırma hatası: kök elementi bulunamadı
Konum: http://localhost:49581/dbac2c7c331c4318bd890689f9179971/browserLinkSignalR/abort?transport=webSockets&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAqcBLlIJuZkeGJKQXz%2BxrBQAAAAACAAAAAAADZgAAwAAAABAAAADG%2Fq0vJ%2BsW7IU6iwNvbFf1AAAAAASAAACgAAAAEAAAAOfllqOnlkEPE7KBDSui56soAAAAW2rC28NGY361uE554mfZtd4JSwYjoIvB%2BWyLNvbDSS9oqdtgivEZpBQAAABAMJUIaY9bO7ZKhtuPHth9XcGGUA%3D%3D&requestUrl=http%3A%2F%2Flocalhost%3A58160%2F&browserName=Firefox&userAgent=Mozilla%2F5.0+(Windows+NT+10.0%3B+Win64%3B+x64%3B+rv%3A56.0)+Gecko%2F20100101+Firefox%2F56.0
Satır: 1, Sütun: 1:

Firefox ws://localhost:49581/dbac2c7c331c4318bd890689f9179971/browserLinkSignalR/reconnect?transport=webSockets&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAqcBLlIJuZkeGJKQXz%2BxrBQAAAAACAAAAAAADZgAAwAAAABAAAAA1hV6GsSKNa1KfMiqQunNFAAAAAASAAACgAAAAEAAAAOrFKba4qx%2FClVOdsySSWmEoAAAAtlPuLu%2BjVyGwGn1pefOuNBjrS5j3rTtPFpWXqBHIoPlqookG4YyB6BQAAACCopM8cJguSpXBXvh%2FlfLSD68%2BLA%3D%3D&messageId=d-8690397F-j%2C0%7Cm%2C6%7Cn%2C0&requestUrl=http%3A%2F%2Flocalhost%3A58160%2F&browserName=Firefox&userAgent=Mozilla%2F5.0+(Windows+NT+10.0%3B+Win64%3B+x64%3B+rv%3A56.0)+Gecko%2F20100101+Firefox%2F56.0&tid=1 sunucusuyla bağlantı kuramıyor.

Sayfa yüklenirken ws://localhost:49581/dbac2c7c331c4318bd890689f9179971/browserLinkSignalR/reconnect?transport=webSockets&connectionToken=AQAAANCMnd8BFdERjHoAwE%2FCl%2BsBAAAAqcBLlIJuZkeGJKQXz%2BxrBQAAAAACAAAAAAADZgAAwAAAABAAAAA1hV6GsSKNa1KfMiqQunNFAAAAAASAAACgAAAAEAAAAOrFKba4qx%2FClVOdsySSWmEoAAAAtlPuLu%2BjVyGwGn1pefOuNBjrS5j3rTtPFpWXqBHIoPlqookG4YyB6BQAAACCopM8cJguSpXBXvh%2FlfLSD68%2BLA%3D%3D&messageId=d-8690397F-j%2C0%7Cm%2C6%7Cn%2C0&requestUrl=http%3A%2F%2Flocalhost%3A58160%2F&browserName=Firefox&userAgent=Mozilla%2F5.0+(Windows+NT+10.0%3B+Win64%3B+x64%3B+rv%3A56.0)+Gecko%2F20100101+Firefox%2F56.0&tid=1 sunucusuyla bağlantı kesildi.