Regression test failure in "File Expression Language"

Issue

• Hi, we are using heavily the "File Expression Language" in camel. Sometime, files have multiple dots in the name, for example PR_1463123585008_310.139.6.168.todo
• In 6.1, the expression file:name.noext gives PR_1463123585008_310.139.6.168
• In 6.2.1, the expression file:name.noext gives PR_1463123585008_310
• Why this change of behaviour ?
• I see that camel 2.15.3 gives a solution with a new expression file:name.noext.single but this version is not yet in 6.2.1.