That’s going to be fixed in Eclipse 4.38: 
https://github.com/eclipse-platform/eclipse.platform.swt/issues/2621

So if you’re not on Tahoe yet, wait at least until 4.38 is out. And maybe wait 
a bit longer too if you rely on any of the Electron apps that haven’t yet been 
updated: https://avarayr.github.io/shamelectron/

Maik


> Am 08.11.2025 um 17:54 schrieb Michael Kondratov via Webobjects-dev 
> <[email protected]>:
> 
> Thank you!
> 
> 
>> On Nov 8, 2025, at 10:35, Jesse Tayler <[email protected]> wrote:
>> 
>> I notice ecplise runs fine but when you try to select text — indeed, you’ll 
>> have TROUBLE.
>> 
>> Version: 2025-03 (4.35.0)
>> Build id: 20250306-0812
>> 
>> Beware. This bug is quite serious.
>> 
>> 26.2 Beta (25C5031i)
>> 
>> 
>> 
>>> On Nov 8, 2025, at 9:19 AM, Theodore Petrosky via Webobjects-dev 
>>> <[email protected]> wrote:
>>> 
>>> Do not update to Tahoe 26.1
>>> 
>>> This is biting me
>>> 
>>> Key points regarding Eclipse IDE and macOS Tahoe 26.1:
>>> Compatibility Issues: Some users have reported issues with Eclipse IDE 
>>> functionality after updating to macOS Tahoe 26.1. Specifically, there have 
>>> been reports of problems with text selection in Eclipse 2025-09 (Build 
>>> 4.37.0.20250905-1455) on macOS Tahoe 26.1, where mouse drag and Shift + 
>>> Arrow key combinations do not properly expand text selections. This issue 
>>> is believed to be related to an Eclipse SWT (Standard Widget Toolkit) bug.
>> 
> 

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