Enter key submits instead of breaking the line.

[GitAlasGo]

In some apps (e.g. discord app) pressing enter sends the message, instead of introducing the line break. Other keyboard (HeliBoard, hacker's keyboard etc) don't have such behaviour. It is not universal across apps (e.g. in Acode editor it does introduce line break as expected).

But other keyboards somehow are not affected, so it puts unexpected keyboard at disadvantage (i have to add new lines to custom keys to compose anything longer than one line). Ctrl and Fn modifier are not the reason (toggled them on and off in all combinations).

Maybe it is discord fault because on a computer the discord website it wants you to hold shift and then click enter to make a newline.

Maybe you can add the line break change to the enter button, but add another enter button above the enter button that enters instead of making a new line.

[Spike-from-NH]

My keyboard, based on Default QWERTY, has "the enter key" defined by enter for the tap and action for a swipe. Traditionally, lines ended with CR,LF to command the Teletype. Unix (thus Android) saved a byte and standardized on LF (renamed New Line). So CR became available for other app use.

[ka-shifuka]

sift + enter its work on me

[GitAlasGo]

sift + enter its work on me

i mentioned it here

Maybe it is discord fault because on a computer the discord website it wants you to hold shift and then click enter to make a newline.

[ka-shifuka]

you can use cutom key also with value "\n"
here an example im just adding "\n" in delete key

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<keyboard name="custom" script="latin">
  <row height="0.73">
    <key width="1.43" key0="esc" key4="ctrl"/>
    <key width="1.43" key0="tab"/>
    <key width="1.43" key0="/" key3="."/>
    <key width="1.43" key0="alt"/>
    <key width="1.43" key0="-" key2="\n"/>
    <key width="1.43" key0="left" key2="up" key3="down"/>
    <key width="1.43" key0="right"/>
  </row>
  <row>
    <key key0="q" key2="1" key4="esc"/>
    <key key0="w" key1="~" key2="2" key3="\@"/>
    <key key0="e" key1="!" key2="3" key3="\#" key4="loc €"/>
    <key key0="r" key1="loc ₪" key2="4" key3="$" key4="0"/>
    <key key0="t" key2="5" key3="%"/>
    <key key0="y" key2="6" key3="^"/>
    <key key0="u" key2="7" key3="&amp;"/>
    <key key0="i" key2="8" key3="*"/>
    <key key0="o" key1="loc accent_macron" key2="9" key3="(" key4=")"/>
    <key key0="p" key2="0" key3="f11_placeholder" key4="f12_placeholder"/>
  </row>
  <row>
    <key shift="0.5" key0="a" key1="tab" key2="`" key4="loc ₪"/>
    <key key0="s" key1="loc accent_ring" key3="loc ß" key4="selectAll"/>
    <key key0="d" key1="loc accent_grave" key2="loc £" key3="loc accent_aigu" key4="copy"/>
    <key key0="f" key1="loc accent_dot_above" key4="paste"/>
    <key key0="g" key1="loc accent_caron" key2="-" key3="_"/>
    <key key0="h" key2="=" key3="+"/>
    <key key0="j" key1="loc accent_trema" key2="loc accent_circonflexe" key3="{" key4="}"/>
    <key key0="k" key1="loc accent_double_aigu" key3="[" key4="]"/>
    <key key0="l" key2="|" key3="\\"/>
  </row>
  <row>
    <key width="1.5" key0="shift" key2="loc capslock"/>
    <key key0="z"/>
    <key key0="x"/>
    <key key0="c" key1="loc accent_cedille" key2="&lt;" key3="."/>
    <key key0="v" key2=">" key3=","/>
    <key key0="b" key2="\?" key3="/"/>
    <key key0="n" key1="loc accent_tilde" key2=":" key3=";"/>
    <key key0="m" key2="&quot;" key3="'"/>
    <key width="1.5" key0="backspace" key2="delete" key1="\n"/>
  </row>
</keyboard>

is little anoying because is hard to edit bottom in keyboard editor there no clue for clipboard pane and arrow key in space key or i just dont know the value is

[GitAlasGo]

you can use cutom key also with value "\n" here an example im just adding "\n" in delete key

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<keyboard name="custom" script="latin">
  <row height="0.73">
    <key width="1.43" key0="esc" key4="ctrl"/>
    <key width="1.43" key0="tab"/>
    <key width="1.43" key0="/" key3="."/>
    <key width="1.43" key0="alt"/>
    <key width="1.43" key0="-" key2="\n"/>
    <key width="1.43" key0="left" key2="up" key3="down"/>
    <key width="1.43" key0="right"/>
  </row>
  <row>
    <key key0="q" key2="1" key4="esc"/>
    <key key0="w" key1="~" key2="2" key3="\@"/>
    <key key0="e" key1="!" key2="3" key3="\#" key4="loc €"/>
    <key key0="r" key1="loc ₪" key2="4" key3="$" key4="0"/>
    <key key0="t" key2="5" key3="%"/>
    <key key0="y" key2="6" key3="^"/>
    <key key0="u" key2="7" key3="&amp;"/>
    <key key0="i" key2="8" key3="*"/>
    <key key0="o" key1="loc accent_macron" key2="9" key3="(" key4=")"/>
    <key key0="p" key2="0" key3="f11_placeholder" key4="f12_placeholder"/>
  </row>
  <row>
    <key shift="0.5" key0="a" key1="tab" key2="`" key4="loc ₪"/>
    <key key0="s" key1="loc accent_ring" key3="loc ß" key4="selectAll"/>
    <key key0="d" key1="loc accent_grave" key2="loc £" key3="loc accent_aigu" key4="copy"/>
    <key key0="f" key1="loc accent_dot_above" key4="paste"/>
    <key key0="g" key1="loc accent_caron" key2="-" key3="_"/>
    <key key0="h" key2="=" key3="+"/>
    <key key0="j" key1="loc accent_trema" key2="loc accent_circonflexe" key3="{" key4="}"/>
    <key key0="k" key1="loc accent_double_aigu" key3="[" key4="]"/>
    <key key0="l" key2="|" key3="\\"/>
  </row>
  <row>
    <key width="1.5" key0="shift" key2="loc capslock"/>
    <key key0="z"/>
    <key key0="x"/>
    <key key0="c" key1="loc accent_cedille" key2="&lt;" key3="."/>
    <key key0="v" key2=">" key3=","/>
    <key key0="b" key2="\?" key3="/"/>
    <key key0="n" key1="loc accent_tilde" key2=":" key3=";"/>
    <key key0="m" key2="&quot;" key3="'"/>
    <key width="1.5" key0="backspace" key2="delete" key1="\n"/>
  </row>
</keyboard>

is little anoying because is hard to edit bottom in keyboard editor there no clue for clipboard pane and arrow key in space key or i just dont know the value is

This is not addressing the root cause, it just tries to cope.