Strange Comparison Issue (Strings that look like numbers fail comparison when using ColdFusion 2021)

gistfile1.txt

<!--- 20200630 Adobe ColdFusion 2021 returns different results than CF2018, CF2016 and Lucee 4.5 & 5.
Discussion https://community.adobe.com/t5/coldfusion-discussions/strange-comparison-issue/m-p/13041667
Reported Bug: https://tracker.adobe.com/#/view/CF-4214261
Tweet: https://twitter.com/gamesover/status/1542938151441666048
--->

<cfset A = javacast("string", "147.xxx.yyy.zzz")>
<cfoutput><pre>
#A#---
Left 4: #Left(A,4)#---
Left 4 eq: #yesNoFormat(Left(A,4) eq "147.")#
Left 4 is: #yesNoFormat(Left(A,4) is "147.")#
Left 4 equal:  #yesNoFormat(Left(A,4) equal "147.")#
Left 4 CFIf eq: #yesNoFormat(Left(A,4) eq "147.")#
Mid dot: #yesNoFormat(Mid(A,4,1) eq ".")#
Left 3 Compare: #yesNoFormat(Left(A,3) eq "147")#
First Item in List: #yesNoFormat(GetToken(A,1,".") eq "147")#
---
Compare: #yesNoFormat(not compare(Left(A,4), "147."))#
Left 4 is/Cast: #yesNoFormat(Left(A,4) is javacast("string","147."))#
</pre></cfoutput>

<cfscript>
initVal = "147.xxx";
tests = [
    "noCast": left(initVal, 4) is "147."
    ,"bothCast": left(javacast("string", initVal), 4) is javacast("string", "147.")
    ,"leftCast": left(javacast("string", initVal), 4) is "147."
    ,"rightCast": left(initVal, 4) is javacast("string", "147.")
];
writeDump(var=tests, label="Using Var: These are all true, except for CF2021");

tests2 = [
    "noCast": left("147.xxx", 4) is "147."
    ,"bothCast": left(javacast("string", "147.xxx"), 4) is javacast("string", "147.")
    ,"leftCast": left(javacast("string", "147.xxx"), 4) is "147."
    ,"rightCast": left("147.xxx", 4) is javacast("string", "147.")
];
writeDump(var=tests2, label="Using Inline: These are all true, except for CF2021");
</cfscript>