[GUACAMOLE-1654] Fully-transparent cursors may render as black blocks in Chrome on Windows

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 1.4.0
• Component/s: guacamole
• Assignee: Unassigned
• Reporter: zhanchenhui
• Created: 01/Aug/22 02:52
• Updated: 02/Aug/22 00:16

Description

When accessing a Guacamole connection in Chrome under Windows, the mouse cursor renders as a large black block when the cursor image is set to be fully transparent. This appears to be a known issue in Chrome and does not occur in other browsers, nor on other platforms, nor on all versions of Windows:

https://bugs.chromium.org/p/chromium/issues/detail?id=31463

NOTE: As hiding the mouse cursor is a very common operation (this will happen when a user types in most desktop applications), the circumstances that result in transparent cursors rendering as black blocks are likely uncommon, and reproducing this may be difficult. If the circumstances required were simply Chrome under Windows, this would be much more widely noticed and reported.