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Code in question

val textAlign: TextAlign get() = this.paragraphStyle.textAlign

@Deprecated("Kept for backwards compatibility.", level = DeprecationLevel.WARNING)
@get:JvmName("getTextAlign")
@Suppress("unused")
val deprecated_boxing_textAlign: TextAlign? get() = this.textAlign

and the bytecode that studio shows me:

  // access flags 0x11
  public final getTextAlign-e0LSkKk()I
   L0
    LINENUMBER 1405 L0
    ALOAD 0
    GETFIELD androidx/compose/ui/text/TextStyle.paragraphStyle : Landroidx/compose/ui/text/ParagraphStyle;
    INVOKEVIRTUAL androidx/compose/ui/text/ParagraphStyle.getTextAlign-e0LSkKk ()I
    IRETURN
   L1
    LOCALVARIABLE this Landroidx/compose/ui/text/TextStyle; L0 L1 0
    MAXSTACK = 1
    MAXLOCALS = 1

  // DEPRECATED
  // access flags 0x20011
  public final getTextAlign()Landroidx/compose/ui/text/style/TextAlign;
  @Lkotlin/jvm/JvmName;(name="getTextAlign") // invisible
  @Lorg/jetbrains/annotations/Nullable;() // invisible
   L0
    LINENUMBER 1410 L0
    ALOAD 0
    INVOKEVIRTUAL androidx/compose/ui/text/TextStyle.getTextAlign-e0LSkKk ()I
    INVOKESTATIC androidx/compose/ui/text/style/TextAlign.box-impl (I)Landroidx/compose/ui/text/style/TextAlign;
    ARETURN
   L1
    LOCALVARIABLE this Landroidx/compose/ui/text/TextStyle; L0 L1 0
    MAXSTACK = 1
    MAXLOCALS = 1

Inspected the JARs

❯ javap -cp 1.6.0-rc01-classes.jar androidx.compose.ui.text.TextStyle | grep getTextAlign
  public final int getTextAlign-e0LSkKk();
  public final androidx.compose.ui.text.style.TextAlign getTextAlign();
  public static void getTextAlign$annotations();

❯ javap -cp 1.5.4-classes.jar androidx.compose.ui.text.TextStyle | grep getTextAlign
  public final androidx.compose.ui.text.style.TextAlign getTextAlign-buA522U();

More info on the hash appended to the jvm signature names. At a high level, the hash is changing because it returns a nullable type in 1.5.4, but a non-null type in 1.6.0-rc01. The rest of the contents of the hash are the same.

Possible fix looks like it would be to include the hash in JvmName annotation.

@get:JvmName("getTextAlign-buA522U")