Adding Multibyte class name Java file fails with "The public type <class name> must be defined in its own file" in business-central

Description of problem:

If you add a multibyte class name Java file (e.g. あいうえお.java) to a project using "git push", the project fails to build. The error messages are displayed in "Messages" pane.

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The public type あいうえお must be defined in its own file | あいうえお.java
The type あいうえお collides with a package | あいうえお.java
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No error is logged in server.log.

Note: You cannot create a multibyte class name Java file by Data Objects Editor. This issue can be reproduced by pushing the local Java file via git.

Steps to Reproduce:

1. Login to business-central
2. Clone a repository (e.g. 'repository1') to local filesystem by ssh git clone (e.g. git clone ssh://brmsAdmin@localhost:8001/repository1)
3. Add a multibyte class name Java file (e.g. あいうえお.java attached to this BZ for your convenience) to local filesystem (e.g. /repository1/project1/src/main/java/org/kie/example/project1/あいうえお.java)
4. git add, commit and push
5. Confirm that "あいうえお" exists under Project Explorer "DATA OBJECTS"
5. "Build&Deploy" in business-central

Actual results:

Build failed with the messages
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The public type あいうえお must be defined in its own file | あいうえお.java
The type あいうえお collides with a package | あいうえお.java
=====

Expected results:

Build successful and we can use the class for rules.