GWT/smartgwt app support with Firefox 74.0

we have web application based on gwt along with some smart-gwt components.The app used to be compatible with chrome and firefox. But after Firefox 74.0 update some of the functionalities have stopped working in firefox. But works fine in chrome.

Smart-gwt components such as calendar are not loading.There is no error stack in console apart from warnings.

 ```

11:40:04.582:WARN:Log:Uncaught exception escaped: com.google.gwt.core.client.JavaScriptException

(NotSupportedError) 

 __gwt$exception: <skipped>

 code: 9

 result: 2152923145

 filename: https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html

 lineNumber: 13114

 columnNumber: 0

 data: null

 stack: ihh@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:13114:43

Dle@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:14538:49

HXd@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:15437:241

UJb@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:16221:290

Er@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:15125:28

$r@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:15556:210

bs@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:16859:1255

Mqj@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:16907:24578

quh@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:14048:142

xuh@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:16907:392

LQj/c.onreadystatechange<@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:10966:65

hdh@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:7982:30

ldh@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:14735:60

kdh/<@https://10.99.7.179/app/1C639C0B473EC335AF7C991184A464ED.cache.html:14216:56

 INDEX_SIZE_ERR: 1

 DOMSTRING_SIZE_ERR: 2

 HIERARCHY_REQUEST_ERR: 3

 WRONG_DOCUMENT_ERR: 4

 INVALID_CHARACTER_ERR: 5

 NO_DATA_ALLOWED_ERR: 6

 NO_MODIFICATION_ALLOWED_ERR: 7

 NOT_FOUND_ERR: 8

 NOT_SUPPORTED_ERR: 9

 INUSE_ATTRIBUTE_ERR: 10

 INVALID_STATE_ERR: 11

 SYNTAX_ERR: 12

 INVALID_MODIFICATION_ERR: 13

 NAMESPACE_ERR: 14

 INVALID_ACCESS_ERR: 15

 VALIDATION_ERR: 16

 TYPE_MISMATCH_ERR: 17

 SECURITY_ERR: 18

 NETWORK_ERR: 19

 ABORT_ERR: 20

 URL_MISMATCH_ERR: 21

 QUOTA_EXCEEDED_ERR: 22

 TIMEOUT_ERR: 23

 INVALID_NODE_TYPE_ERR: 24

 DATA_CLONE_ERR: 25: Operation is not supported

```

Is there no support for gwt/smart-gwt from firefox-74 onwards?

version:

GWT-2.6.1

smartgwt-6.0p-02-11

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