Mouse click deletes selected text and double-click does not select the full word in IntelliJ IDEA and Datagrip 2026.1

[moniss]

Describe the bug
For the last few weeks, there has been an annoying issue with the String Manipulation plugin in JetBrains IDEs.
When I select some text and then click, the selected block is deleted.
Also, word selection does not work correctly. A double-click should select the full word, but it does not.
In the attached videos, I am not pressing any keyboard key, only using the mouse buttons.
This issue happens only in JetBrains IDEs. Other text editors work correctly.
It happens across all projects I use, and I was also able to reproduce it in DataGrip.

To Reproduce
Steps to reproduce the behavior:

1. Open any project in a JetBrains IDE with the String Manipulation plugin enabled.
2. Select a block of text in the editor.
3. Click with the mouse.
4. Observe that the selected text is deleted.

Additional case:

1. Double-click on a word in the editor.
2. Observe that the full word is not selected as expected.

Expected behavior

• Clicking after selecting text should not delete the selected block.
• Double-clicking a word should select the full word.

Actual behavior

• Clicking after selecting text deletes the selected block.
• Double-click word selection does not work correctly.

Screenshots
If applicable, add screenshots to help explain your problem.

Environment :
IntelliJ IDEA 2026.1
Build #IU-261.22158.277, built on March 24, 2026
Source revision: 89c647576f1d2
Runtime version: 25.0.2+10-b329.72 amd64137.0.17-261-b65
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Toolkit: sun.awt.wl.WLToolkit
Linux 6.19.11-200.fc43.x86_64
Fedora Linux 43 (Workstation Edition); glibc: 2.42; desktop: GNOME (GNOME Shell 49.5)
GC: G1 Young Generation, G1 Concurrent GC, G1 Old Generation
Memory: 3976M
Cores: 16
Registry:
ide.experimental.ui=true
trace.state.event.service.url=https://api.jetbrains.cloud/trace-status
Non-Bundled Plugins:
com.intellij.jvm.dfa.analysis (261.22158.182)
intellij.jupyter (261.22158.354)
com.jetbrains.plugins.asp (261.22158.185)
ru.adelf.idea.dotenv (261.22158.354)
JavaScript (261.22158.277)
com.intellij.java (261.22158.277)
org.jetbrains.completion.full.line (261.22158.277)
com.intellij.spring (261.22158.354)
Subversion (261.22158.354)
intellij.grid.loader.xls (261.22158.185)
com.jetbrains.plugins.ini4idea (261.22158.185)
dev.meanmail.plugin.nginx-intellij-plugin (2026.1.13)
Batch Scripts Support (1.0.13)
mobi.hsz.idea.gitignore (4.5.7)
com.intellij.aqua (261.22158.362)
com.intellij.ideolog (261.22158.195)
com.jetbrains.plugins.webDeployment (261.22158.299)
org.jetbrains.plugins.remote-run (261.22158.354)
com.haulmont.jpab (261.22158.182)
org.strangeway.jdl (261.22158.185)
Docker (261.22158.299)
com.intellij.nativeDebug (261.22158.180)
com.jetbrains.kmm (261.22158.317-IJ)
com.intellij.ml.llm (261.22158.366)
com.intellij.spring.boot (261.22158.277)
com.intellij.spring.websocket (261.22158.182)
com.jetbrains.jax.ws (261.22158.182)
com.intellij.tide (261.22158.185)
String Manipulation (9.16.0)
com.intellij.javaee.ejb (261.22158.182)
JSR45Plugin (261.22158.182)
com.intellij.reactivestreams (261.22158.182)
org.jetbrains.android (261.22158.277)
com.android.tools.design (261.22158.182)
androidx.compose.plugins.idea (261.22158.182)
org.jetbrains.idea.maven (261.22158.277)
MavenRunHelper (5.0.0-IJ2025.1)
com.jetbrains.space (261.22158.185)
Kotlin: 261.22158.277-IJ
Current Desktop: GNOME

Additional context
Tested with all plugins disabled, and the issue appears only when the String Manipulation plugin is enabled.

Reproduced in multiple projects.
Reproduced in DataGrip as well.
Only happens in JetBrains IDEs.
Does not happen in other text editors.

[krasa]

That is very strange. I do not think there is anything that could cause it. Perhaps try disabling other plugins?