Unexpected result of Assign to All

[MAETempels]

Consider the following pattern:
https://d-bl.github.io/GroundForge/stitches.html?patchWidth=12&patchHeight=8&tile=l&shiftColsSW=0&shiftRowsSW=1&shiftColsSE=1&shiftRowsSE=1&a1=clcrct

Note: tile=L

Now, pick a stitch, say "clcrct" and Apply to all.

The pattern now changes:

https://d-bl.github.io/GroundForge/stitches.html?patchWidth=12&patchHeight=8&tile=clcrct&shiftColsSW=0&shiftRowsSW=1&shiftColsSE=1&shiftRowsSE=1&f1=ctc&e1=ctc&d1=ctc&c1=ctc&b1=ctc&a1=clcrct

tile=clcrct !!!

[jo-pol]

The regular expression on checks the value after the = is a legitimate stitch definition. Instead (or also?) it should check what is in front of the =. It might be better to use the standard javascript function to turn the quer of the URL in key-value pairs, prevent escapes whe creating the new URL.

[MAETempels]

I can look at this when doing "all random".
I noticed, that "assign to ignore" uses a pattern with checking before the "=".