IntelliJ outputs error messages twice

I am working on IntelliJ 2019.3, with Truth 1.0 and Java 11.0.6, and running tests using Junit 5.6.0.

I'm trying to do test some basic assertions, such as checking the value of an int. However, IntelliJ is printing the messages twice:

```java
@Test
@Tag("D")
public void testDuplicateDemo() {
int x = 5;
assertThat(x).isEqualTo(10);
}
```
Outputs:


This is rather annoying and unexpected behavior. If I test equality of Strings, the same behavior is shown, unless the string has multiple lines, in which case, only expected / but was appears.

Why is this happening? Is there a workaround / fix? Thanks!