Refactor variable name gives NullPointerException - Cannot invoke "javax.lang.model.element.VariableElement.getEnclosingElement()" because "var" is null

[JohnAtPheasantVille]

on variable name 'extractPartOfSpeech' in line

Pattern extractPartOfSpeech = Pattern.compile("\[([\-a-zA-Z'\(\),; ]*?)\]$");

Refactor > Rename

amended name to 'extractFinalBracket'

produced NullException in dialog box (see screenshot)

Repeated activity and came up with the same exception. Tried a third time and appeared to work this time. Variable was local to the method.

Undid changes, saved files and restarted Netbeans and then Refactor worked ok (hence a discussion item rather than a bug fix)

Vanilla Netbeans 15 (installed from https://netbeans.apache.org/download/index.html yesterday), Java 19.0.1, running on Windows 10.

Netbeans About details below

Product Version: Apache NetBeans IDE 15
Java: 19.0.1; OpenJDK 64-Bit Server VM 19.0.1+10-21
Runtime: OpenJDK Runtime Environment 19.0.1+10-21
System: Windows 10 version 10.0 running on amd64; UTF-8; en_GB (nb)
User directory: C:\Development\Netbeans\John
Cache directory: C:\Development\Netbeans\Cache

Attachments:

• Netbeans screenshot of exception and relevant source code being worked on
• Notifications pane
• Call stack from the 'View Details' option
  
  StackTrace.txt