Issues

• Some projects are severely slow, with very high memory use

  spork
  scratchfoundation/scratch-blocks#3662 · Filter by author cwillisf opened on Jul 15, 2026

• Boolean blocks and menu popups show unwanted outlines

  spork
  scratchfoundation/scratch-blocks#3661 · Filter by author cwillisf opened on Jul 15, 2026

• Dropdown padding wrong: box-sizing: border-box missing

  spork
  scratchfoundation/scratch-blocks#3660 · Filter by author cwillisf opened on Jul 15, 2026

• Duplicated and pasted blocks no longer follow the cursor

  spork
  scratchfoundation/scratch-blocks#3659 · Filter by author cwillisf opened on Jul 15, 2026

• Middle mouse button causes uncontrolled workspace/block movement

  spork
  scratchfoundation/scratch-blocks#3658 · Filter by author cwillisf opened on Jul 15, 2026

• Red hat block (%15) in custom block definitions no longer works

  spork
  scratchfoundation/scratch-blocks#3657 · Filter by author cwillisf opened on Jul 15, 2026

• RTL languages: reversed text and operators, erratic dragging, custom blocks lost off-screen

  spork
  scratchfoundation/scratch-blocks#3656 · Filter by author cwillisf opened on Jul 15, 2026

• Deleting a hat block deletes the whole stack

  spork
  scratchfoundation/scratch-blocks#3655 · Filter by author cwillisf opened on Jul 15, 2026

• Dragging a stack behind the palette can delete part of it

  spork
  scratchfoundation/scratch-blocks#3654 · Filter by author cwillisf opened on Jul 15, 2026
  3

• Detached string inputs float loose in the workspace ("potato blocks")

  spork
  scratchfoundation/scratch-blocks#3653 · Filter by author cwillisf opened on Jul 15, 2026

• Deleting a custom block input leaves a blank, uneditable input

  spork
  scratchfoundation/scratch-blocks#3652 · Filter by author cwillisf opened on Jul 15, 2026

• My blocks - Added the ability to return values

  scratchfoundation/scratch-blocks#3601 · Filter by author Aldmors opened on May 30, 2026
  3

• 5s

  scratchfoundation/scratch-blocks#3583 · Filter by author roma1982romatol-del opened on May 7, 2026
  1

• 65

  scratchfoundation/scratch-blocks#3582 · Filter by author roma1982romatol-del opened on May 7, 2026
  1

• Incorrect Connection Top Bound For Blocks Dragged From Palette

  spork
  scratchfoundation/scratch-blocks#3559 · Filter by author Geotale opened on Apr 20, 2026

• No scroll to the "My Blocks" category when a new one is made

  Low SeverityMedium Prevalence
  Bug

  scratchfoundation/scratch-blocks#3542 · Filter by author cwillisf opened on Apr 14, 2026

• Cannot tab between block inputs in the palette

  Low PrevalenceMedium Severity
  Bug

  scratchfoundation/scratch-blocks#3458 · Filter by author cwillisf opened on Mar 9, 2026
  2

• Expand Control, Operators, and Looks Blocks; Remove 'If On Edge, Bounce' in Motion

  scratchfoundation/scratch-blocks#3419 · Filter by author colotm opened on Nov 21, 2025
  2

• Dragging the flyout doesn't stop the scroll animation

  scratchfoundation/scratch-blocks#3384 · Filter by author nimeratus opened on Aug 31, 2025
  1

• Wide blocks get visually truncated in the palette

  scratchfoundation/scratch-blocks#3376 · Filter by author sugama-satsuki opened on Aug 15, 2025
  4

• Open mutator dialog will cause part of the toolbox not visible

  scratchfoundation/scratch-blocks#3366 · Filter by author KAINIMAL opened on Jul 10, 2025

• "days since 2000" should be calculated relative to timezone (it's not)

  scratchfoundation/scratch-blocks#3290 · Filter by author cleary opened on Jun 28, 2024
  1

• horizontal水平方向修改数字无法渲染

  scratchfoundation/scratch-blocks#3287 · Filter by author zhigge opened on Jun 24, 2024

• something very broken in https://scratch.mit.edu/projects/793676889/

  scratchfoundation/scratch-blocks#3082 · Filter by author H-A-M-G-E-R opened on Aug 4, 2023
  3

• Feature request - pen reporters

  scratchfoundation/scratch-blocks#2991 · Filter by author ggenije opened on Mar 14, 2023