I, too, am curious what version of java (java -version) is being used on this system.
I was unable to repro with AP 4.6.3, java 11, and a freshly installed KNIME Textprocessing extension.
java -version
openjdk version “11.0.13” 2021-10-19
OpenJDK Runtime Environment Temurin-11.0.13+8 (build 11.0.13+8)
OpenJDK 64-Bit Server VM Temurin-11.0.13+8 (build 11.0.13+8, mixed mode)