default alignment reversed - Android Q&A, Help & Troubleshooting

Hello,
I have a strange problem that on some devices, like galaxy s8 and LG G6 , the default alignment is reversed.
(But on most galaxy s8 and LG G6 devices its is ok)
The default alignment for a TextView is Left but on some devices it is Right. I solved it by adding "android:layout_alignParentLeft="true"
The same is true for buttons and EditText.
But there are some more strange things with the alignment, see the screenshots below:
"alignment wrong"
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
"alignment ok"
What can cause this alignment problem, it's not the device self i think, but maybe its related to the country or language settings?
part of XML code:
Code:
<RelativeLayout
android:id="@+id/widget1"
android:background="@color/background"
android:layout_below="@+id/widget0"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="15sp"
android:text="Z1"
android:layout_alignParentLeft="true"
android:id="@+id/_bandstop_filter_g0"
android:layout_alignBaseline="@+id/bandstop_filter_g0"
android:layout_marginStart="15dp"
android:layout_marginEnd="3dp" />
<EditText
android:layout_marginBottom="3dp"
android:textColor="@color/gui_text1"
android:focusable="false"
android:background="@drawable/shape_edittext_lock"
android:paddingLeft="8dp"
android:layout_height="30dp"
android:textSize="15sp"
android:inputType="numberSigned|numberDecimal"
android:id="@+id/bandstop_filter_g0"
android:layout_width="82dp"
android:layout_toRightOf="@+id/_bandstop_filter_g0"
android:layout_marginTop="5dp" />
<TextView
android:id="@+id/bandstop_filter_g0_"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/bandstop_filter_g0"
android:layout_marginStart="3dp"
android:layout_toRightOf="@+id/bandstop_filter_g0"
android:text="Ω"
android:textSize="15sp"
/>
<TextView
android:id="@+id/_bandstop_filter_2g0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/bandstop_filter_g0"
android:layout_marginStart="28dp"
android:layout_marginEnd="3dp"
android:layout_toRightOf="@+id/bandstop_filter_g0_"
android:text="Z2"
android:textSize="15sp"
/>
<EditText
android:layout_marginBottom="3dp"
android:textColor="@color/gui_text1"
android:focusable="false"
android:background="@drawable/shape_edittext_lock"
android:paddingLeft="8dp"
android:layout_height="30dp"
android:textSize="15sp"
android:inputType="numberSigned|numberDecimal"
android:id="@+id/bandstop_filter_2g0"
android:layout_width="82dp"
android:layout_toRightOf="@+id/_bandstop_filter_2g0"
android:layout_alignBaseline="@+id/bandstop_filter_g0" />
<TextView
android:id="@+id/bandstop_filter_2g0_"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/bandstop_filter_g0"
android:layout_marginStart="3dp"
android:layout_toRightOf="@+id/bandstop_filter_2g0"
android:text="Ω"
android:textColor="@color/gui_text1"
android:textSize="15sp"
/>