Problems with Maven builds and running Tomcat since 2019.3 update

Since the recent update to 2019.3, I have massive problems with running my apps in Tomcat using Maven builds from Idea. I don't know what is actually causing the problems. 

- Idea: IntelliJ IDEA 2019.3 (Ultimate Edition)
Build #IU-193.5233.102, built on November 27, 2019
Subscription is active until July 12, 2020
Runtime version: 11.0.4+10-b520.11 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Linux 4.15.0-72-generic
GC: ParNew, ConcurrentMarkSweep
Memory: 1960M
Cores: 4
Registry:
Non-Bundled Plugins: BashSupport, GrepCode.com Code Search, Pythonid, com.steve.plugins.autoscroll, mobi.hsz.idea.gitignore

- OS: Ubuntu 18.04.3 LTS

- Project JDK: 1.8.0-112

- Maven version: 3.2.5

- Tomcat 8.0.36

my Run/Debug config has Maven goal "clean compile" with my local profile and Build exploded artifact in the before launch steps.

When clicking the "Rerun" button the first time, or manually stopping the server and clicking, "Run" or "Debug", I get: com.intellij.javaee.oss.admin.jmx.JmxAdminException: com.intellij.execution.ExecutionException: (my project target path) not found for the web module.

When clicking it again, it already fails at the Compile step, because it doesn't find some packages used in my java code. This continues to happen when I click the Run or Debug buttons again.

Only if I manually run "clean" from the Maven menu, close all Run and Debug output windows, and then click "Run" or "Debug" again, I get a correct build, deploy and Tomcat start again.

While this is (only) annoying for locally running my application, my JUnit configurations run into similar problems and I can't get to run them at all.