{{}\n{ makes ScratchBlocks crash

gem1001

My browser / operating system: Windows NT 10.0, Chrome 150.0.0.0, No Flash version detected
Placing

{{}
{

, or similar strings such as

{{}
{{}

or

{{}
{{}}

in a ScratchBlocks tag will make ScratchBlocks crash with an ‘Assertion failed’ error. For example:

{{}
{

No blocks are rendered.
It should look something like this:

This occurs on both on the forums and on scratchblocks.github.io, in both 3.0 and 2.0 modes.

It also prevents ScratchBlocks from working in the entire page, so you are all now banned from using ScratchBlocks for the next 19 posts

Last edited by gem1001 (July 19, 2026 18:30:09)

gem1001

SpeedBump™

Last edited by gem1001 (July 19, 2026 18:26:19)

ScodexPerson

Let me test.

{{}
{{}

Can replicate: My browser / operating system: Linux, Chrome 150.0.0.0, No Flash version detected

Last edited by ScodexPerson (July 19, 2026 19:52:26)

bitmap_caketin

I posted something, but I misunderstood the context

Last edited by bitmap_caketin (July 20, 2026 09:12:13)

scratchy_boy106

{{}
{ What happened to the font

I can replicate My browser / operating system: Windows NT 10.0, Chrome 150.0.0.0, No Flash versions detected

7e_x

NOOO MY PRECIOUS SCRATCHBLOCKS

CaptFrIEdshrimp

{ {}
{ Today's chance of bugs: 12232233

My browser / operating system: Windows NT 10.0, Chrome 147.0.0.0, No Flash version detected
Can clone

SamDean0000

lemme test…

move () steps

Travis_isaSigma

{{}
}

Could not replicate on GitHub

medians

lol

it worked in the preview earlier just not when I actually submitted the post

Last edited by medians (July 21, 2026 00:14:42)

Foxofpeace

so basically its a blockban for an entire page

gem1001

Foxofpeace wrote:
so basically its a blockban for an entire page

From when you use it to the bottom of the page

Last edited by gem1001 (July 21, 2026 06:26:50)

purplebunny63

Oh no!
How do we use scratchblocks now :(
When scratchblocks break::events hat
Play sound (womp womp womp v) until done::sound

7e_x

i just realised you can use scratchblocks when it breaks for this cool font

cat3du

Mmm hmmmm

forever
show
endwhen green flag clicked

cat3du

Look cool font

ChristianScratcher1

move ({{}
{) steps

Can replicate. Cool font tho so now I know how to change fonts

Last edited by ChristianScratcher1 (July 21, 2026 16:23:33)

MrDrProfessorRadical

turn ccw ({{}
{{}}) degrees

I can replicate
My browser / operating system: Linux, Firefox 152.0, No Flash versions detected

Karictre

::cat events
@greenFlag @stopSign @turnLeft @turnRight {

}@loopArrow ::sensing cap

This is the result with some other block types and icons.

Edit: It should be noted that it is not the entire page which is affected, but only the posts. The blocks still render properly in the message preview pane upon clicking the green checkmark.

Last edited by Karictre (July 22, 2026 05:51:56)

mtnif

why won't they fix any of the scratchblocks crashers

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