empty body for triggers #2577

Description

Since a few updates to HeidiSQL (currently using version 12.21), some of my triggers are no longer displayed; more precisely, they have an empty body.

Log msg: /* Result from previous query does not contain expected pattern: (\sDEFINER=(["]?[^"]+[`"]..........

The beginning of the CREATE TRIGGER statement:

[Trigger is displayed -> image "trigger_OK"]
CREATE DEFINER=root@localhost TRIGGER items_a_AFTER_INSERT AFTER INSERT ON items_a FOR EACH ROW BEGIN ..... (one line no line breaks)

[Trigger is not displayed -> image "trigger_empty"]
CREATE DEFINER=daniel@% TRIGGER items_a4_BEFORE_INSERT
BEFORE INSERT ON items_a
FOR EACH
ROW BEGIN
..... (line breaks before AFTER, FOR, BEGIN)

Is this a bug? Does this have anything to do with line breaks?

My current thought:
/* Result from previous query does not contain expected pattern: (\sDEFINER=(["]?[^"]+["]?@["]?[^`"]+[`"]?))?\s+TRIGGER\s+(IF\s+NOT\s+EXISTS\s+)?["]?[^"]+["]?\s+(BEFORE|AFTER)\s+(INSERT|UPDATE|DELETE)\s+ON\s+(["]?[^`"]+[`"]?)\s+FOR\s+EACH\s+ROW\s+(.+)$ */

FOR\s+EACH\s+ROW\s+(.+)$ -->> "(.+)" the dot suppress line-breaks (?)

Normally I write my trigger in as a raw string in notepad or HeidiSQL, the statements with line breaks comes from my Backup-Tool (is a easy trigger export with MySqlBackup.NET (nuget, C#))

trigger_empty:

trigger_OK

HeidiSQL version and OS

12.21 Windows

Database server version

MariaDB 10.11.

Reproduction recipe

trigger OK, run:
CREATE DEFINER=root@localhost TRIGGER items_a_AFTER_INSERT AFTER INSERT ON items_a FOR EACH ROW BEGIN
declare v0, v00 int;
........

trigger empty, run:
CREATE DEFINER=daniel TRIGGER items_a4_BEFORE_INSERT
BEFORE INSERT ON items_a
FOR EACH
ROW BEGIN
DECLARE v1,v2 varchar(45);
......

Error/Backtrace