Entry editor: Toggle journal abbreviation roundtrip does not work

[LDeolindo]

JabRef version

Latest development branch build (please note build date below)

Operating system

macOS

Details on version and operating system

mac os 11.7 big sur

Checked with the latest development build

• I made a backup of my libraries before testing the latest development version.
• I have tested the latest development version and the problem persists

Steps to reproduce the behaviour

1. Create a new article, set journal or journaltitle to Comm. Pure Appl. Math.
2. Click on the Toggle abbreviation button next to the field
   
3. A dotless abbreviation is now in the field (Medline abbrev)
4. The field now shows Comm Pure Appl Math
5. Click again on the Toggle abbrevation button.
6. Nothing happens

=> Here the full journal name should be visible

Hints on the code

For anyone looking into this:
The problem is that both methods isKnownName
and

jabref/buildSrc/src/copied/java/org/jabref/logic/journals/JournalAbbreviationRepository.java

Line 77 in a1f2d51

77 public Optional<Abbreviation> get(String input) { 

do not consider a dotless abbreviation.

Solution could be to replace spaces with dots before checking.

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