Tests return exit code 134

[CreedVI]

Upon closing the window and ending the program the JRE encounters a fatal error and returns with Process finished with exit code 134 (interrupted by signal 6: SIGABRT)

System info:
IDE: IntelliJ Idea 2020.3
JDK: OpenJDK 15.0.1
OS: Linux Mint 19.3

Error log:

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00007fd1dcc870d0, pid=20061, tid=20062
#
# JRE version: OpenJDK Runtime Environment (15.0.1+9) (build 15.0.1+9-18)
# Java VM: OpenJDK 64-Bit Server VM (15.0.1+9-18, mixed mode, sharing, tiered, compressed oops, g1 gc, linux-amd64)
# Problematic frame:
# C  0x00007fd1dcc870d0
#
# Core dump will be written. Default location: Core dumps may be processed with "/lib/systemd/systemd-coredump %P %u %g %s %t 9223372036854775808 %e" (or dumping to /home/creedvi/Documents/Java/Raylib-J/core.20061)
#
# An error report file with more information is saved as:
# /home/creedvi/Documents/Java/Raylib-J/hs_err_pid20061.log
#
# If you would like to submit a bug report, please visit:
#   https://bugreport.java.com/bugreport/crash.jsp
#

Process finished with exit code 134 (interrupted by signal 6: SIGABRT