MySQL Bugs: #92989: SQL editor Action Output tooltip freezes workbench temporarily

Bug #92989	SQL editor Action Output tooltip freezes workbench temporarily
Submitted:	29 Oct 2018 14:32	Modified:	29 Oct 2018 15:18
Reporter:	Jason Brunette	Email Updates:
Status:	Won't Fix	Impact on me:	None
Category:	MySQL Workbench: SQL Editor	Severity:	S3 (Non-critical)
Version:	8.0.13	OS:	Any
Assigned to:		CPU Architecture:	Any

Description:
The tooltip that appears when hovering over the entry for a very "wide" (lots of text on one line) query in the Output > Action Output pane will freeze the Workbench window for a number of seconds.  A large, blank tooltip window will appear for a few seconds and then disappear, at which point the Workbench is responsive again.

How to repeat:
Run a very "wide" query... for example, something with 10k characters on one line:

SELECT * FROM information.schema.TABLES WHERE
1=1 AND 1=1 ... (x1000)

Once executed, hover mouse over entry for it in the Output > Action Output pane.  Observe that Workbench is no longer responsive while Workbench attempts to display the tooltip.

Suggested fix:
Limit size of tooltip to x number of characters.

Fix synopsis

Hello Jason,

Thank you for the report.
Observed this on Win7 with WB 8.0.13.

regards,
Umesh

What amplifies the impact of this is that Workbench immediately begins creating a tooltip simply based on mouseover, rather than employing a hover delay.  The following real world scenario gets me every time:

1. Run wide query(s).
2. Minimize Workbench window.
3. <do something else>
4. Click Workbench's icon in task bar.
5. Drag mouse up to click something in Workbench, mousing over entries for the long queries in the Action Output in the process.
6. Weep softly.

Posted by developer:

This issue applies to the legacy MySQL Workbench 8.x implementation that is no longer supported or maintained.
MySQL Workbench 26.7 is a complete rewrite using a new technology stack and does not use the affected legacy implementation.
Therefore, this issue is not applicable to the current MySQL Workbench product and as such is closed.