[Bug]: User defined Java expression - fields insertion on selected text

[dave-csc]

Apache Hop version?

2.13

Java version?

17.0.2

Operating system

Linux

What happened?

1. Have a relatively long expression in the Java expression field, such as: "This is a relatively long string " + [replace_me] + " and it could really be even longer"
2. Modify the expression: select the text [replace_me], and then double click on a field on the left panel to insert it in place

It happens sometimes that the field is not correctly inserted, specifically if you select the text to replace with:

• mouse press before [
• mouse drag
• mouse release after ]

In this case, the field name will overwrite the expression starting from the last character.

This operation cannot be undone with CTRL + Z or similar (you can only cancel all modifications)

Issue Priority

Priority: 2

Issue Component

Component: Hop Gui

[nadment]

I was unable to reproduce it under Windows and Hop 2.14

[dave-csc]

record_2025-05-26_16-22-39.zip

I attach a screen grab of what can happen, even with Hop 2.14 😅 (using Ubuntu 24.04 on a Windows VirtualBox, no particular graphics options enabled). In this case, I meant to replace the "1" with a field, but the "1" is not removed and the field overwrites a trailing space